201
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Lu X, Zhang Z, Yu L, Zhang B, Wang B, Gong T, Tian C, Xiao B, Fu Y. Free Radical Pathway Cleavage of C—O Bonds for the Synthesis of Alkylboron Compounds. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800500] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Zhen‐Qi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Lu Yu
- High Magnetic Field LaboratoryChinese Academy of Sciences Hefei Anhui 230031 China
| | - Ben Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Bing Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Tian‐Jun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Chang‐Lin Tian
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
- High Magnetic Field LaboratoryChinese Academy of Sciences Hefei Anhui 230031 China
- School of Life SciencesUniversity of Science and Technology of China Hefei Anhui 230027 China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEMUniversity of Science and Technology of China Hefei Anhui 230026 China
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202
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018; 57:15871-15876. [PMID: 30295983 DOI: 10.1002/anie.201810405] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 12/17/2022]
Abstract
A palladium-catalyzed intermolecular arylcarbonylation of unactivated alkenes has been developed. Unsymmetrical diaryliodonium salts (DAISs) were used as arylation reagents, the bulky aryl group (ArL ) of which was exclusively incorporated into the arylcarbonylated products, which contained the ArL group and a carboxylic ester group at the α- and β-carbon position, respectively, of the original terminal C-C double bond. The reaction features excellent chemo- and regioselectivity, high functional-group tolerance, and very mild reaction conditions.
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Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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203
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Liu C, Ji C, Hong X, Szostak M. Palladium‐Catalyzed Decarbonylative Borylation of Carboxylic Acids: Tuning Reaction Selectivity by Computation. Angew Chem Int Ed Engl 2018; 57:16721-16726. [DOI: 10.1002/anie.201810145] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/04/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Chengwei Liu
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Chong‐Lei Ji
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Xin Hong
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Michal Szostak
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
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204
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Liu C, Ji C, Hong X, Szostak M. Palladium‐Catalyzed Decarbonylative Borylation of Carboxylic Acids: Tuning Reaction Selectivity by Computation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810145] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chengwei Liu
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Chong‐Lei Ji
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Xin Hong
- Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Michal Szostak
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
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205
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Miura T, Funakoshi Y, Nakahashi J, Moriyama D, Murakami M. Synthesis of Elongated Esters from Alkenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Yuuta Funakoshi
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Junki Nakahashi
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Daisuke Moriyama
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
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206
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Cheng Y, Mück-Lichtenfeld C, Studer A. Metal-Free Radical Borylation of Alkyl and Aryl Iodides. Angew Chem Int Ed Engl 2018; 57:16832-16836. [PMID: 30332527 PMCID: PMC6470957 DOI: 10.1002/anie.201810782] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 11/06/2022]
Abstract
A metal-free radical borylation of alkyl and aryl iodides with bis(catecholato)diboron (B2 cat2 ) as the boron source under mild conditions is introduced. The borylation reaction is operationally easy to conduct and shows high functional group tolerance and broad substrate scope. Radical clock experiments and density functional theory calculations provide insights into the mechanism and rate constants for C-radical borylation with B2 cat2 are disclosed.
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Affiliation(s)
- Ying Cheng
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
| | - Christian Mück-Lichtenfeld
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany.,Westfälische Wilhelms-Universität, Center for Multiscale Theory and Computation (CMTC), Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Westfälische Wilhelms-Universität, Organisch-Chemisches Institut, Corrensstrasse 40, 48149, Münster, Germany
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207
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Wang C, Guo M, Qi R, Shang Q, Liu Q, Wang S, Zhao L, Wang R, Xu Z. Visible-Light-Driven, Copper-Catalyzed Decarboxylative C(sp3
)−H Alkylation of Glycine and Peptides. Angew Chem Int Ed Engl 2018; 57:15841-15846. [PMID: 30296349 DOI: 10.1002/anie.201809400] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/24/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Mengzhun Guo
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Rupeng Qi
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Qinyu Shang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 China
| | - Shan Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Long Zhao
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Zhaoqing Xu
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
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208
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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209
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Wang C, Guo M, Qi R, Shang Q, Liu Q, Wang S, Zhao L, Wang R, Xu Z. Visible-Light-Driven, Copper-Catalyzed Decarboxylative C(sp3
)−H Alkylation of Glycine and Peptides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809400] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chao Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Mengzhun Guo
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Rupeng Qi
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Qinyu Shang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 China
| | - Shan Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Long Zhao
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
| | - Zhaoqing Xu
- Key Laboratory of Preclinical Study for New Drugs, of Gansu Province; School of Basic Medical Sciences; Lanzhou University; 199 West Donggang Road, Lanzhou 730000 China
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210
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Sandfort F, Strieth-Kalthoff F, Klauck FJR, James MJ, Glorius F. Deaminative Borylation of Aliphatic Amines Enabled by Visible Light Excitation of an Electron Donor-Acceptor Complex. Chemistry 2018; 24:17210-17214. [PMID: 30290050 DOI: 10.1002/chem.201804246] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Indexed: 11/08/2022]
Abstract
A deaminative strategy for the borylation of aliphatic primary amines is described. Alkyl radicals derived from the single-electron reduction of redox-active pyridinium salts, which can be isolated or generated in situ, were borylated in a visible light-mediated reaction with bis(catecholato)diboron. No catalyst or further additives were required. The key electron donor-acceptor complex was characterized in detail by both experimental and computational investigations. The synthetic potential of this mild protocol was demonstrated through the late-stage functionalization of natural products and drug molecules.
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Affiliation(s)
- Frederik Sandfort
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Felix Strieth-Kalthoff
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Felix J R Klauck
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Michael J James
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
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211
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Miura T, Funakoshi Y, Nakahashi J, Moriyama D, Murakami M. Synthesis of Elongated Esters from Alkenes. Angew Chem Int Ed Engl 2018; 57:15455-15459. [PMID: 30264919 DOI: 10.1002/anie.201809115] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/07/2018] [Indexed: 12/30/2022]
Abstract
A convenient method for synthesizing elongated aliphatic esters from alkenes is reported. An (alkoxycarbonyl)methyl radical species is generated upon visible-light irradiation of an ester-stabilized phosphorus ylide in the presence of a photoredox catalyst. This radical species adds onto the carbon-carbon double bond of an alkene to produce an elongated aliphatic ester.
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Affiliation(s)
- Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Yuuta Funakoshi
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Junki Nakahashi
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Daisuke Moriyama
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
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212
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Hu J, Wang G, Li S, Shi Z. Selective C-N Borylation of Alkyl Amines Promoted by Lewis Base. Angew Chem Int Ed Engl 2018; 57:15227-15231. [PMID: 30253022 DOI: 10.1002/anie.201809608] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/14/2018] [Indexed: 11/10/2022]
Abstract
An efficient method for the metal-free deaminative borylation of alkylamines, using bis(catecholato)diboron as the boron source, to directly synthesize various alkyl potassium trifluoroborate salts is introduced. The key to this high reactivity is the utilization of pyridinium salt activated alkylamines, with a catalytic amount of a bipyridine-type Lewis base as a promoter. This transformation shows good functional-group compatibility (e.g., it is unimpeded by the presence of a ketone, indole, internal alkene, or unactivated alkyl chloride) and can serve as a powerful synthetic tool for borylation of amine groups in complex compounds. Mechanistic experiments and computations suggest a mechanism in which the Lewis base activated B2 cat2 unit intercepts an alkyl radical generated by single-electron transfer (SET) from a boron-based reductant.
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Affiliation(s)
- Jiefeng Hu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
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213
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Hu J, Wang G, Li S, Shi Z. Selective C−N Borylation of Alkyl Amines Promoted by Lewis Base. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809608] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiefeng Hu
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of EducationInstitute of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of EducationInstitute of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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214
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Maxwell BD. New radical methods for the potential synthesis of carbon-13 and carbon-14 labeled complex products. J Labelled Comp Radiopharm 2018; 61:1024-1035. [DOI: 10.1002/jlcr.3680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 01/03/2023]
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215
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Sun X, Chen J, Ritter T. Catalytic dehydrogenative decarboxyolefination of carboxylic acids. Nat Chem 2018; 10:1229-1233. [DOI: 10.1038/s41557-018-0142-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 08/14/2018] [Indexed: 01/21/2023]
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216
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Wang J, Shang M, Lundberg H, Feu KS, Hecker SJ, Qin T, Blackmond DG, Baran PS. Cu-Catalyzed Decarboxylative Borylation. ACS Catal 2018; 8:9537-9542. [PMID: 30505624 PMCID: PMC6257631 DOI: 10.1021/acscatal.8b02928] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/07/2018] [Indexed: 12/15/2022]
Abstract
![]()
A simple
method for the conversion of carboxylic acids to boronic
esters via redox-active esters (RAEs) is reported using copper catalysis.
The scope of this transformation is broad, and compared with the known
protocols available, it represents the most inexpensive, rapid, and
operationally simple option. In addition to a full exploration of
the scope, a kinetic study was performed to elucidate substrate and
reagent concentration dependences.
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Affiliation(s)
- Jie Wang
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ming Shang
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Helena Lundberg
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Karla S. Feu
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Scott J. Hecker
- The Medicines Company, 3013 Science Park Road, San Diego, California 92121, United States
| | - Tian Qin
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Donna G. Blackmond
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute (TSRI), North Torrey Pines Road, La Jolla, California 92037, United States
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217
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Zhang JJ, Duan XH, Wu Y, Yang JC, Guo LN. Transition-metal free C-C bond cleavage/borylation of cycloketone oxime esters. Chem Sci 2018; 10:161-166. [PMID: 30713627 PMCID: PMC6328001 DOI: 10.1039/c8sc03315c] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/28/2018] [Indexed: 12/22/2022] Open
Abstract
An efficient transition-metal free C-C bond cleavage/borylation of cycloketone oxime esters has been described. In this reaction, the B2(OH)4 reagent not only served as the boron source but also acted as an electron donor source through formation of a complex with a DMAc-like Lewis base. This complex could be used as an efficient single electron reductant in other ring-opening transformations of cycloketone oxime esters. Free-radical trapping, radical-clock, and DFT calculations all suggest a radical pathway for this transformation.
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Affiliation(s)
- Jin-Jiang Zhang
- Department of Chemistry , School of Science , MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China .
| | - Xin-Hua Duan
- Department of Chemistry , School of Science , MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China .
| | - Yong Wu
- Department of Chemistry , School of Science , MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China .
| | - Jun-Cheng Yang
- Department of Chemistry , School of Science , MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China .
| | - Li-Na Guo
- Department of Chemistry , School of Science , MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China .
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218
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Scott RS, Veinot AJ, Stack DL, Gormley PT, Khuong BN, Vogels CM, Masuda JD, Baerlocher FJ, MacCormack TJ, Westcott SA. Synthesis, reactivity, and antimicrobial properties of boron-containing 4-ethyl-3-thiosemicarbazide derivatives. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0108] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The addition of 4-ethyl-3-thiosemicarbazide to benzaldehyde and boronic acid containing derivatives afforded the corresponding thiosemicarbazones (1–3) or benzodiazaborines (4–6) depending on the position of the boronic acid within the ring. All compounds have been characterized fully including an X-ray diffraction study of the methoxy-containing benzodiazaborine 6. Attempts to coordinate thiosemicarbazones 2 and 3 to palladium(II) acetate were unsuccessful; however, addition of the non-boron-containing derivative 1 to palladium afforded complex 7 whose molecular structure was determined by an X-ray diffraction study. The initial bioactivities of compounds 1–7 were examined against two fungi, Aspergillus niger and Saccharomyces cerevisiae, and two bacteria, Bacillus cereus and Pseudomonas aeruginosa.
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Affiliation(s)
- Ryan S. Scott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Alex J. Veinot
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Darcie L. Stack
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Patrick T. Gormley
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - B. Ninh Khuong
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Jason D. Masuda
- Department of Chemistry, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Felix J. Baerlocher
- Department of Biology, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Tyson J. MacCormack
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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219
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Malins LR. Peptide modification and cyclization via transition-metal catalysis. Curr Opin Chem Biol 2018; 46:25-32. [DOI: 10.1016/j.cbpa.2018.03.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/20/2018] [Accepted: 03/29/2018] [Indexed: 01/08/2023]
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220
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Liu X, Zhou C, Lin E, Han X, Zhang S, Li Q, Wang H. Decarboxylative Negishi Coupling of Redox‐Active Aliphatic Esters by Cobalt Catalysis. Angew Chem Int Ed Engl 2018; 57:13096-13100. [DOI: 10.1002/anie.201806799] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Xu‐Ge Liu
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Chu‐Jun Zhou
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - E. Lin
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Xiang‐Lei Han
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Shang‐Shi Zhang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
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221
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Sun SZ, Börjesson M, Martin-Montero R, Martin R. Site-Selective Ni-Catalyzed Reductive Coupling of α-Haloboranes with Unactivated Olefins. J Am Chem Soc 2018; 140:12765-12769. [PMID: 30244574 DOI: 10.1021/jacs.8b09425] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A mild, chemo- and site-selective catalytic protocol that allows for incorporating an alkylboron fragment into unactivated olefins is described. The use of internal olefins enables C-C bond-formation at remote sp3 C-H sites, constituting a complementary and conceptually different approach to existing borylation techniques that are currently available at sp3 centers.
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Affiliation(s)
- Shang-Zheng Sun
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology, Av. Països Catalans 16 , 43007 Tarragona , Spain
| | - Marino Börjesson
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology, Av. Països Catalans 16 , 43007 Tarragona , Spain
| | - Raul Martin-Montero
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology, Av. Països Catalans 16 , 43007 Tarragona , Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology, Av. Països Catalans 16 , 43007 Tarragona , Spain.,ICREA , Passeig Lluís Companys, 23 , 08010 Barcelona , Spain
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222
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Xu Y, Yang X, Fang H. Additive- and Photocatalyst-Free Borylation of Arylazo Sulfones under Visible Light. J Org Chem 2018; 83:12831-12837. [PMID: 30256639 DOI: 10.1021/acs.joc.8b01662] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yuliang Xu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P. R. China
| | - Xinying Yang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P. R. China
| | - Hao Fang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P. R. China
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223
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Affiliation(s)
- Runze Mao
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
| | - Jonathan Balon
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
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224
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Mao R, Balon J, Hu X. Decarboxylative C(sp3
)−O Cross-Coupling. Angew Chem Int Ed Engl 2018; 57:13624-13628. [DOI: 10.1002/anie.201808024] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/21/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Runze Mao
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
| | - Jonathan Balon
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis; Institute of Chemical Sciences and Engineering; École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305; Lausanne 1015 Switzerland
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225
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Liu X, Zhou C, Lin E, Han X, Zhang S, Li Q, Wang H. Decarboxylative Negishi Coupling of Redox‐Active Aliphatic Esters by Cobalt Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806799] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xu‐Ge Liu
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Chu‐Jun Zhou
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - E. Lin
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Xiang‐Lei Han
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Shang‐Shi Zhang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
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226
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Schwamb CB, Fitzpatrick KP, Brueckner AC, Richardson HC, Cheong PHY, Scheidt KA. Enantioselective Synthesis of α-Amidoboronates Catalyzed by Planar-Chiral NHC-Cu(I) Complexes. J Am Chem Soc 2018; 140:10644-10648. [PMID: 30102526 DOI: 10.1021/jacs.8b05045] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The first highly selective catalytic hydroboration of alkyl-substituted aldimines to provide medicinally relevant α-amidoboronates is disclosed. The Cu(I)-catalyzed borylation proceeds with excellent facial selectivity when a set of planar-chiral N-heterocyclic carbenes (NHCs) were employed as ligands. Density functional theory computations suggest that interactions between BPin and the planar-chiral catalyst are responsible for the observed stereoselectivity. Important pharmacophores, such as the boronate analogue of isoleucine, can be prepared using a chromatography-free protocol starting from commercially available reagents. The application of these NHC ligands in these Cu(I)-catalyzed processes offers a significant contribution to existing strategies for laboratory-scale preparation of enantioenriched α-amidoboronates.
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Affiliation(s)
- C Benjamin Schwamb
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , Silverman Hall , Evanston , Illinois 60208 , United States
| | - Keegan P Fitzpatrick
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , Silverman Hall , Evanston , Illinois 60208 , United States
| | - Alexander C Brueckner
- Department of Chemistry , Oregon State University , 153 Gilbert Hall , Corvallis , Oregon 97331 , United States
| | - H Camille Richardson
- Department of Chemistry , Oregon State University , 153 Gilbert Hall , Corvallis , Oregon 97331 , United States
| | - Paul H-Y Cheong
- Department of Chemistry , Oregon State University , 153 Gilbert Hall , Corvallis , Oregon 97331 , United States
| | - Karl A Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , Silverman Hall , Evanston , Illinois 60208 , United States
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227
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Boström J, Brown DG, Young RJ, Keserü GM. Expanding the medicinal chemistry synthetic toolbox. Nat Rev Drug Discov 2018; 17:709-727. [DOI: 10.1038/nrd.2018.116] [Citation(s) in RCA: 267] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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228
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Grant PS, Brimble MA, Furkert DP. Synthesis of the Bicyclic Lactone Core of Leonuketal, Enabled by a Telescoped Diels-Alder Reaction Sequence. Chem Asian J 2018; 14:1128-1135. [PMID: 30058292 DOI: 10.1002/asia.201800903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/24/2018] [Indexed: 01/04/2023]
Abstract
The Diels-Alder cycloaddition reaction has become established as a fundamental approach for the preparation of complex natural products; however, successful application of the intermolecular Diels-Alder cycloaddition reaction to the synthesis of particularly congested scaffolds remains surprisingly problematic. Inspired by the terpenoid spiroketal natural product leonuketal, a challenging telescoped reaction sequence has been realized to access the core [2.2.2]-bicyclic lactone ring system and its [3.2.1] isomer. Our four-step, protecting-group-free process required detailed investigation to circumvent the problems of adduct fragmentation and intermediate instability. Successful solution of these practical issues, along with unambiguous structural determination of the target structures, provide useful insights that will facilitate future applications of the Diels-Alder cycloaddition reaction to challenging, highly congested molecular scaffolds and ongoing synthetic efforts towards this natural product.
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Affiliation(s)
- Phillip S Grant
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Symonds St, Auckland, 1010, New Zealand
| | - Daniel P Furkert
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Symonds St, Auckland, 1010, New Zealand
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229
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Wu J, He L, Noble A, Aggarwal VK. Photoinduced Deaminative Borylation of Alkylamines. J Am Chem Soc 2018; 140:10700-10704. [PMID: 30091912 DOI: 10.1021/jacs.8b07103] [Citation(s) in RCA: 261] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An operationally simple deaminative borylation reaction of primary alkylamines has been developed. The formation of electron-donor-acceptor complexes between N-alkylpyridinium salts and bis(catecholato)diboron enables photoinduced single-electron transfer and fragmentation to carbon-centered radicals, which are subsequently borylated. The mild conditions allow a diverse range of readily available alkylamines to be efficiently converted into synthetically valuable alkylboronic esters under catalyst-free conditions.
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Affiliation(s)
- Jingjing Wu
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , United Kingdom
| | - Lin He
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , United Kingdom
| | - Adam Noble
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , United Kingdom
| | - Varinder K Aggarwal
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , United Kingdom
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230
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Abstract
In The Logic of Chemical Synthesis, E. J. Corey stated that the key to retrosynthetic analysis was a "wise choice of appropriate simplifying transforms" ( Corey , E. J. ; Cheng , X.-M. The Logic of Chemical Synthesis ; John Wiley : New York , 1989 ). Through the lens of "ideality", chemists can identify opportunities that can lead to more practical, scalable, and sustainable synthesis. The percent ideality of a synthesis is defined as [(no. of construction rxns) + (no. of strategic redox rxns)]/(total no. of steps) × 100. A direct consequence of designing "wise" or "ideal" plans is that new transformations often need invention. For example, if functional group interconversions are to be avoided, one is faced with the prospect of directly functionalizing C-H bonds ( Gutekunst , W. R. ; Baran , P. S. Chem. Soc. Rev. 2011 , 40 , 1976 ; Brückl , T. ; et al. Acc. Chem. Res. 2012 , 45 , 826 ). If protecting groups are minimized, methods testing the limits of chemoselectivity require invention ( Baran , P. S. ; et al. Nature 2007 , 446 , 404 ; Young , I. S. ; Baran , P. S. Nat. Chem. 2009 , 1 , 193 ). Finally, if extraneous redox manipulations are to be eliminated, methods directly generating key skeletal bonds result ( Burns , N. Z. ; et al. Angew. Chem., Int. Ed. 2009 , 48 , 2854 ). Such analyses applied to total synthesis have seen an explosion of interest in recent years. Thus, it is the interplay of aspirational strategic demands with the limits of available methods that can influence and inspire ingenuity. E. J. Corey's sage advice holds true when endeavoring in complex molecule synthesis, but together with the tenets of the "ideal" synthesis, avoiding concession steps leads to the most strategically and tactically optimal route ( Hendrickson , J. B. J. Am. Chem. Soc. 1975 , 97 , 5784 ; Gaich , T. ; Baran , P. S. J. Org. Chem. 2010 , 75 , 4657 ). Polar disconnections are intuitive and underlie much of retrosynthetic logic. Undergraduates exposed to multistep synthesis are often taught to assemble organic molecules through the combination of positively and negatively charged synthons because, after all, opposites attract. Indeed, the most employed two-electron C-C bond forming reactions today are those based upon either classical cross-coupling reactions (e.g., Suzuki, Negishi, or Heck) or polar additions (aldol, Michael, or Grignard). These reactions are the mainstay of modern synthesis and have revolutionized the way molecules are constructed due to their robust and predictable nature. In contrast, radical chemistry is sparsely covered beyond the basic principles of radical chain processes (i.e., radical halogenation). The historical perception of radicals as somewhat uncontrollable species does not help the situation. As a result, synthetic chemists are not prone to make radical-based strategic bond disconnections during first-pass retrosynthetic analyses. Recent interest in the use of one-electron radical cross-coupling (RCC) methods has been fueled by the realization of their uniquely chemoselective profiles and the opportunities they uncover for dramatically simplifying synthesis. In general, such couplings can proceed by relying on the innate preferences of a substrate (innate RCC) or through interception with a mediator (usually a transition metal) to achieve programmed RCC. This Account presents a series of case studies illustrating the inherent strategic and tactical advantages of employing both types of radical-based cross-couplings in a variety of disparate settings. Thematically, it is clear that one-electron disconnections, while not considered to be intuitive, can serve to enable syntheses that are more direct and feature a minimal use of protecting group chemistry, functional group interconversions, and nonstrategic redox fluctuations.
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Affiliation(s)
- Joel M. Smith
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 93037, United States
| | - Stephen J. Harwood
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 93037, United States
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 93037, United States
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231
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Campillo-Alvarado G, Brannan AD, Swenson DC, MacGillivray LR. Exploiting the Hydrogen-Bonding Capacity of Organoboronic Acids to Direct Covalent Bond Formation in the Solid State: Templation and Catalysis of the [2 + 2] Photodimerization. Org Lett 2018; 20:5490-5492. [DOI: 10.1021/acs.orglett.8b02439] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Alexis D. Brannan
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Dale C. Swenson
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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232
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Zheng C, Wang Y, Xu Y, Chen Z, Chen G, Liang SH. Ru-Photoredox-Catalyzed Decarboxylative Oxygenation of Aliphatic Carboxylic Acids through N-(acyloxy)phthalimide. Org Lett 2018; 20:4824-4827. [DOI: 10.1021/acs.orglett.8b01885] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chao Zheng
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Collaborative Innovation Center of Tropical Biological Resources, Hainan Normal University, Hainan Haikou 571158, China
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Yuting Wang
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Collaborative Innovation Center of Tropical Biological Resources, Hainan Normal University, Hainan Haikou 571158, China
| | - Yangrui Xu
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Collaborative Innovation Center of Tropical Biological Resources, Hainan Normal University, Hainan Haikou 571158, China
| | - Zhen Chen
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Collaborative Innovation Center of Tropical Biological Resources, Hainan Normal University, Hainan Haikou 571158, China
| | - Steven H. Liang
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
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233
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Yu L, Tang ML, Si CM, Meng Z, Liang Y, Han J, Sun X. Zinc-Mediated Decarboxylative Alkylation of Gem-difluoroalkenes. Org Lett 2018; 20:4579-4583. [DOI: 10.1021/acs.orglett.8b01866] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liting Yu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
- Otsuka Shanghai Research Institute, Shanghai 201203, China
| | - Mei-Lin Tang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Chang-Mei Si
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Zhi Meng
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yongxi Liang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Jilai Han
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Xun Sun
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
- The Institutes of Integrative Medicine of Fudan University, Shanghai 201203, China
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234
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Sha W, Deng L, Ni S, Mei H, Han J, Pan Y. Merging Photoredox and Copper Catalysis: Enantioselective Radical Cyanoalkylation of Styrenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01863] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wanxing Sha
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
| | - Lingling Deng
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
| | - Shengyang Ni
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210093, China
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235
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Synthesis of Secondary and Tertiary Alkyl Boronic Esters by gem
-Carboborylation: Carbonyl Compounds as Bis(electrophile) Equivalents. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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236
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Shi D, Wang L, Xia C, Liu C. Synthesis of Secondary and Tertiary Alkyl Boronic Esters by gem
-Carboborylation: Carbonyl Compounds as Bis(electrophile) Equivalents. Angew Chem Int Ed Engl 2018; 57:10318-10322. [DOI: 10.1002/anie.201804684] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 05/21/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Dunfa Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Lu Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 P. R. China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 P. R. China
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 P. R. China
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237
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Kiyokawa K, Okumatsu D, Minakata S. Hypervalent iodine(III)-mediated decarboxylative acetoxylation at tertiary and benzylic carbon centers. Beilstein J Org Chem 2018; 14:1046-1050. [PMID: 29977378 PMCID: PMC6009488 DOI: 10.3762/bjoc.14.92] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/27/2018] [Indexed: 01/20/2023] Open
Abstract
The decarboxylative acetoxylation of carboxylic acids using a combination of PhI(OAc)2 and I2 in a CH2Cl2/AcOH mixed solvent is reported. The reaction was successfully applied to two types of carboxylic acids containing an α-quaternary and a benzylic carbon center under mild reaction conditions. The resulting acetates were readily converted into the corresponding alcohols by hydrolysis.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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238
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Kinetically guided radical-based synthesis of C(sp 3)-C(sp 3) linkages on DNA. Proc Natl Acad Sci U S A 2018; 115:E6404-E6410. [PMID: 29946037 DOI: 10.1073/pnas.1806900115] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
DNA-encoded libraries (DEL)-based discovery platforms have recently been widely adopted in the pharmaceutical industry, mainly due to their powerful diversity and incredible number of molecules. In the two decades since their disclosure, great strides have been made to expand the toolbox of reaction modes that are compatible with the idiosyncratic aqueous, dilute, and DNA-sensitive parameters of this system. However, construction of highly important C(sp3)-C(sp3) linkages on DNA through cross-coupling remains unexplored. In this article, we describe a systematic approach to translating standard organic reactions to a DEL setting through the tactical combination of kinetic analysis and empirical screening with information captured from data mining. To exemplify this model, implementation of the Giese addition to forge high value C-C bonds on DNA was studied, which represents a radical-based synthesis in DEL.
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239
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Li P, Ma N, Wang Z, Dai Q, Hu C. Base-Mediated Intramolecular Decarboxylative Synthesis of Alkylamines from Alkanoyloxycarbamates. J Org Chem 2018; 83:8233-8240. [DOI: 10.1021/acs.joc.8b00970] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peihe Li
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Nuannuan Ma
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zheng Wang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Qipu Dai
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Changwen Hu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
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240
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Ye C, Qian B, Li Y, Su M, Li D, Bao H. Iron-Catalyzed Dehydrative Alkylation of Propargyl Alcohol with Alkyl Peroxides To Form Substituted 1,3-Enynes. Org Lett 2018; 20:3202-3205. [PMID: 29786445 DOI: 10.1021/acs.orglett.8b01043] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This paper reports a new method for the generation of substituted 1,3-enynes, whose synthesis by other methods could be a challenge. The dehydrative decarboxylative cascade coupling reaction of propargyl alcohol with alkyl peroxides is enabled by an iron catalyst and alkylating reagents. Primary, secondary, and tertiary alkyl groups can be introduced into 1,3-enynes, affording various substituted 1,3-enynes in moderate to good yields. Mechanistic studies suggest the involvement of a radical-polar crossover pathway.
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Affiliation(s)
- Changqing Ye
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China.,University of Chinese Academy of Sciences , Beijing , 100049 , P. R. China
| | - Bo Qian
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Min Su
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China.,University of Chinese Academy of Sciences , Beijing , 100049 , P. R. China
| | - Daliang Li
- Biomedical Research Center of South China & College of Life Science , Fujian Normal University , No. 1 Keji Road, Shangjie , Fuzhou , Fujian 350117 , P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China.,University of Chinese Academy of Sciences , Beijing , 100049 , P. R. China
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241
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Cheng Y, Mück-Lichtenfeld C, Studer A. Transition Metal-Free 1,2-Carboboration of Unactivated Alkenes. J Am Chem Soc 2018; 140:6221-6225. [PMID: 29741375 PMCID: PMC6014685 DOI: 10.1021/jacs.8b03333] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
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A method for transition metal-free
1,2-carboboration of unactivated
alkenes with bis(catecholato)diboron as the boron source in combination
with alkyl halides as the alkyl component is introduced. The three-component
reaction proceeds via a radical pathway on a broad range of unactivated
alkenes, and the 1,2-carboboration products serve as valuable synthetic
building blocks. Density functional theory calculations provide insights
into the mechanism.
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Affiliation(s)
- Ying Cheng
- Institute of Organic Chemistry , University of Münster , Corrensstrasse 40 , 48149 Münster , Germany
| | | | - Armido Studer
- Institute of Organic Chemistry , University of Münster , Corrensstrasse 40 , 48149 Münster , Germany
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242
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Guo L, Rueping M. Decarbonylative Cross-Couplings: Nickel Catalyzed Functional Group Interconversion Strategies for the Construction of Complex Organic Molecules. Acc Chem Res 2018; 51:1185-1195. [PMID: 29652129 DOI: 10.1021/acs.accounts.8b00023] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The utilization of carboxylic acid esters as electrophiles in metal-catalyzed cross-coupling reactions is increasingly popular, as environmentally friendly and readily available ester derivatives can be powerful alternatives to the commonly used organohalides. However, key challenges associated with the use of these chemicals remain to be addressed, including the stability of ester substrates and the high energy barrier associated with their oxidative addition to low-valent metal species. Due to recent developments in nickel catalysis that make it easier to perform oxidative additions, chemists have become interested in applying less reactive electrophiles as coupling counterparts in nickel-catalyzed transformations. Hence, our group and others have independently investigated various ester group substitutions and functionalizations enabled by nickel catalysis. Such methods are of great interest as they enable the exchange of ester groups, which can be used as directing groups in metal-catalyzed C-H functionalizations prior to their replacement. Here, we summarize our recent efforts toward the development of nickel-catalyzed decarbonylative cross-coupling reactions of carboxylic esters. Achievements accomplished by other groups in this area are also included. To this day, a number of new transformations have been successfully developed, including decarbonylative arylations, alkylations, cyanations, silylations, borylations, aminations, thioetherifications, stannylations, and hydrogenolysis reactions. These transformations proceed via a nickel-catalyzed decarbonylative pathway and have shown a high degree of reactivity and chemoselectivity, as well as several other unique advantages in terms of substrate availability, due to the use of esters as coupling partners. Although the mechanisms of these reactions have not yet been fully understood, chemists have already provided some important insights. For example, Yamamoto explored the stoichiometric nickel-mediated decarbonylation process of esters and proposed a reaction mechanism involving a C(acyl)-O bond cleavage and a CO extrusion. Key nickel intermediates were isolated and characterized by Shi and co-workers, supporting the assumption of a nickel/ N-heterocyclic carbene-promoted C(acyl)-O bond activation and functionalization. Our combined experimental and computational study of a ligand-controlled chemoselective nickel-catalyzed cross-coupling of aromatic esters with alkylboron reagents provided further insight into the reaction mechanism. We demonstrated that nickel complexes with bidentate ligands favor the C(aryl)-C bond cleavage in the oxidative addition step, resulting in decarbonylative alkylations, while nickel complexes with monodentate phosphorus ligands promote the activation of the C(acyl)-O bond, leading to the production of ketone products. Although more detailed mechanistic investigations need to be undertaken, the successful development of decarbonylative cross-coupling reactions can serve as a solid foundation for future studies. We believe that this type of decarbonylative cross-coupling reactions will be of significant value, in particularly in combination with the retrosynthetic analysis and synthesis of natural products and biologically active molecules. Thus, the presented ester substitution methods will pave the way for successful applications in the construction of complex frameworks by late-stage modification and functionalization of carboxylic acid derivatives.
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Affiliation(s)
- Lin Guo
- Institute of Organic Chemistry, RWTH-Aachen University, Landoltweg 1, 52072 Aachen, Germany
| | - Magnus Rueping
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
- Institute of Organic Chemistry, RWTH-Aachen University, Landoltweg 1, 52072 Aachen, Germany
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243
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Sun HB, Gong L, Tian YB, Wu JG, Zhang X, Liu J, Fu Z, Niu D. Metal- and Base-Free Room-Temperature Amination of Organoboronic Acids with N
-Alkyl Hydroxylamines. Angew Chem Int Ed Engl 2018; 57:9456-9460. [PMID: 29736974 DOI: 10.1002/anie.201802782] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Hong-Bao Sun
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Liang Gong
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Yu-Biao Tian
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Jin-Gui Wu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Xia Zhang
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Jie Liu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Zhengyan Fu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Dawen Niu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
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244
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Sun HB, Gong L, Tian YB, Wu JG, Zhang X, Liu J, Fu Z, Niu D. Metal- and Base-Free Room-Temperature Amination of Organoboronic Acids with N
-Alkyl Hydroxylamines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802782] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Hong-Bao Sun
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Liang Gong
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Yu-Biao Tian
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Jin-Gui Wu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Xia Zhang
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Jie Liu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Zhengyan Fu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
| | - Dawen Niu
- State Key Laboratory of Biotherapy and Cancer Center; West China Hospital
- School of Chemical Engineering; Sichuan University; No. 17 Renmin Nan Road Chengdu 610041 China
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245
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Keaveney ST, Schoenebeck F. Palladium-Catalyzed Decarbonylative Trifluoromethylation of Acid Fluorides. Angew Chem Int Ed Engl 2018; 57:4073-4077. [PMID: 29479784 PMCID: PMC5900963 DOI: 10.1002/anie.201800644] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/21/2018] [Indexed: 12/14/2022]
Abstract
While acid fluorides can readily be made from widely available or biomass-feedstock-derived carboxylic acids, their use as functional groups in metal-catalyzed cross-coupling reactions is rare. This report presents the first demonstration of Pd-catalyzed decarbonylative functionalization of acid fluorides to yield trifluoromethyl arenes (ArCF3 ). The strategy relies on a Pd/Xantphos catalytic system and the supply of fluoride for transmetalation through intramolecular redistribution to the the Pd center. This strategy eliminated the need for exogenous and detrimental fluoride additives and allows Xantphos to be used in catalytic trifluoromethylations for the first time. Our experimental and computational mechanistic data support a sequence in which transmetalation by R3 SiCF3 occurs prior to decarbonylation.
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Affiliation(s)
- Sinead T. Keaveney
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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246
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Keaveney ST, Schoenebeck F. Palladium-Catalyzed Decarbonylative Trifluoromethylation of Acid Fluorides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800644] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sinead T. Keaveney
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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247
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Koy M, Sandfort F, Tlahuext‐Aca A, Quach L, Daniliuc CG, Glorius F. Palladium‐Catalyzed Decarboxylative Heck‐Type Coupling of Activated Aliphatic Carboxylic Acids Enabled by Visible Light. Chemistry 2018; 24:4552-4555. [DOI: 10.1002/chem.201800813] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Maximilian Koy
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Frederik Sandfort
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Adrian Tlahuext‐Aca
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Linda Quach
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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248
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Malins LR. Decarboxylative couplings as versatile tools for late-stage peptide modifications. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24049] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Lara R. Malins
- Research School of Chemistry; Australian National University; Canberra ACT 2601 Australia
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249
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Adamson NJ, Wilbur KCE, Malcolmson SJ. Enantioselective Intermolecular Pd-Catalyzed Hydroalkylation of Acyclic 1,3-Dienes with Activated Pronucleophiles. J Am Chem Soc 2018; 140:2761-2764. [PMID: 29446922 PMCID: PMC5937024 DOI: 10.1021/jacs.7b13300] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report a highly enantioselective Pd-PHOX-catalyzed intermolecular hydroalkylation of acyclic 1,3-dienes. Meldrum's acid derivatives and other activated C-pronucleophiles, such as β-diketones and malononitriles, react with a variety of aryl- and alkyl-substituted dienes in ≤20 h at room temperature. The coupled products, obtained in up to 96% yield and 97.5:2.5 er, are easily transformed into useful chemical building blocks for downstream synthesis.
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Affiliation(s)
- Nathan J. Adamson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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250
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Affiliation(s)
- Sandip Murarka
- Department of Chemistry; Indian Institute of Technology Jodhpur; NH-65 Nagaur Road, Karwar - 342037 Jodhpur District, Rajasthan India
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