51
|
Affiliation(s)
- Yan Qin
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihui Zhu
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sanzhong Luo
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
52
|
Lu W, Xu H, Shen Z. Copper-catalyzed aromatic C-H alkoxylation with alcohols under aerobic conditions. Org Biomol Chem 2017; 15:1261-1267. [PMID: 28098319 DOI: 10.1039/c6ob02582j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient protocol for copper-catalyzed aromatic C-H alkoxylation with alcohols has been developed under aerobic conditions. The protocol provides a complementary method to couple arenes and alcohols to furnish aromatic ethers. The advantages of this method are the employment of a cheap Cu(OAc)2 catalyst, oxygen as the terminal oxidant and alcohol as both an alkoxy reagent and a solvent. Notably, the catalytic amount of benzoic acid plays a significant role in this transformation.
Collapse
Affiliation(s)
- Wenkui Lu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 DongchuanRoad, Shanghai 200240, China.
| | | | | |
Collapse
|
53
|
Wang H, Niu Y, Zhang G, Ye XS. A unified synthesis of cyclic ethers or lactones via Pd-catalyzed intramolecular O -functionalization of sp 3 C H bonds. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
54
|
Gao W, Jin B, Peng R, Yu Y, Shan D, Chu S. CuCl2-Mediated Oxidative Coupling of N,N-Dimethylanilines with [60]Fullerene in the Presence of Molecular Oxygen. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Wei Gao
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Bo Jin
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Rufang Peng
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Yin Yu
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Dongshi Shan
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Shijin Chu
- State Key Laboratory
Cultivation Base for Nonmetal Composites and
Functional Materials and ‡Department of Chemistry, School of Materials Science
and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| |
Collapse
|
55
|
White KL, Movassaghi M. Concise Total Syntheses of (+)-Haplocidine and (+)-Haplocine via Late-Stage Oxidation of (+)-Fendleridine Derivatives. J Am Chem Soc 2016; 138:11383-9. [PMID: 27510728 PMCID: PMC5014600 DOI: 10.1021/jacs.6b07623] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the first total syntheses of (+)-haplocidine and its N1-amide congener (+)-haplocine. Our concise synthesis of these alkaloids required the development of a late-stage and highly selective C-H oxidation of complex aspidosperma alkaloid derivatives. A versatile, amide-directed ortho-acetoxylation of indoline amides enabled our implementation of a unified strategy for late-stage diversification of hexacyclic C19-hemiaminal ether structures via oxidation of the corresponding pentacyclic C19-iminium ions. An electrophilic amide activation of a readily available C21-oxygenated lactam, followed by transannular cyclization and in situ trapping of a transiently formed C19-iminium ion, expediently provided access to hexacyclic C19-hemiaminal ether alkaloids (+)-fendleridine, (+)-acetylaspidoalbidine, and (+)-propionylaspidoalbidine. A highly effective enzymatic resolution of a non-β-branched primary alcohol (E = 22) allowed rapid preparation of both enantiomeric forms of a C21-oxygenated precursor for synthesis of these aspidosperma alkaloids. Our synthetic strategy provides succinct access to hexacyclic aspidosperma derivatives, including the antiproliferative alkaloid (+)-haplocidine.
Collapse
Affiliation(s)
- Kolby L. White
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
56
|
Zhu RY, Farmer ME, Chen YQ, Yu JQ. A Simple and Versatile Amide Directing Group for C-H Functionalizations. Angew Chem Int Ed Engl 2016; 55:10578-99. [PMID: 27479708 PMCID: PMC5518755 DOI: 10.1002/anie.201600791] [Citation(s) in RCA: 490] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Indexed: 01/12/2023]
Abstract
Achieving selective C-H activation at a single and strategic site in the presence of multiple C-H bonds can provide a powerful and generally useful retrosynthetic disconnection. In this context, a directing group serves as a compass to guide the transition metal to C-H bonds by using distance and geometry as powerful recognition parameters to distinguish between proximal and distal C-H bonds. However, the installation and removal of directing groups is a practical drawback. To improve the utility of this approach, one can seek solutions in three directions: 1) Simplifying the directing group, 2) using common functional groups or protecting groups as directing groups, and 3) attaching the directing group to substrates via a transient covalent bond to render the directing group catalytic. This Review describes the rational development of an extremely simple and yet broadly applicable directing group for Pd(II) , Rh(III) , and Ru(II) catalysts, namely the N-methoxy amide (CONHOMe) moiety. Through collective efforts in the community, a wide range of C-H activation transformations using this type of simple directing group have been developed.
Collapse
Affiliation(s)
- Ru-Yi Zhu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Marcus E Farmer
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Yan-Qiao Chen
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA.
| |
Collapse
|
57
|
Das P, Saha D, Saha D, Guin J. Aerobic Direct C(sp2)-H Hydroxylation of 2-Arylpyridines by Palladium Catalysis Induced with Aldehyde Auto-Oxidation. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01539] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Prasenjit Das
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Debajyoti Saha
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Dibyajyoti Saha
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Joyram Guin
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| |
Collapse
|
58
|
Zhang L, Fang DC. An Explicit Interpretation of the Directing Group Effect for the Pd(OAc)2-Catalyzed Aromatic C–H Activations. J Org Chem 2016; 81:7400-10. [DOI: 10.1021/acs.joc.6b00997] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - De-Cai Fang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| |
Collapse
|
59
|
Kolle S, Batra S. Pd(OAc)2-catalysed regioselective alkoxylation of aryl (β-carbolin-1-yl)methanones via β-carboline directed ortho-C(sp(2))-H activation of an aryl ring. Org Biomol Chem 2016; 13:10376-85. [PMID: 26324764 DOI: 10.1039/c5ob01500f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis of (2-alkoxyphenyl)(9H-pyrido[3,4-b]indol-1-yl)methanone via Pd(OAc)2-catalyzed regioselective alkoxylation of aryl (β-carbolin-1-yl) methanones employing β-carboline directed ortho-C(sp(2))-H activation of an aryl ring under oxidative conditions is described.
Collapse
Affiliation(s)
- Shivalinga Kolle
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow-226031, UP, India.
| | | |
Collapse
|
60
|
Zhu R, Farmer ME, Chen Y, Yu J. Eine einfache und vielseitige dirigierende Amidgruppe zur Funktionalisierung von C‐H‐Bindungen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600791] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ru‐Yi Zhu
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Marcus E. Farmer
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Yan‐Qiao Chen
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute (TSRI) 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| |
Collapse
|
61
|
Yu M, Wang Z, Tian M, Lu C, Li S, Du H. Purinyl N(3)-Directed Palladium-Catalyzed C-H Alkoxylation of N(9)-Arylpurines: A Late-Stage Strategy to Synthesize N(9)-(ortho-Alkoxyl)arylpurines. J Org Chem 2016; 81:3435-42. [PMID: 27015589 DOI: 10.1021/acs.joc.6b00148] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A palladium-catalyzed alkoxylation of N(9)-arylpurines with primary or secondary alcohols has been developed successfully, which is a rare C-H activation reaction of polynitrogenated purines and offers a late-stage strategy to synthesize N(9)-(ortho-alkoxyl)arylpurines. Although there are more than four nitrogen atoms present in the purine moiety, the reaction can be effectively conducted by sterically blocking the N(1) site for catalyst coordination and first employing the purinyl N(3) atom as a directing group.
Collapse
Affiliation(s)
- Mingwu Yu
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Zhiqian Wang
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Miao Tian
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Chenghu Lu
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Shunlai Li
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| | - Hongguang Du
- Faculty of Science, Beijing University of Chemical Technology , Beijing 100029, P. R. China
| |
Collapse
|
62
|
Palladium-catalyzed decarboxylative ortho-acylation of N-nitrosoanilines with α-oxocarboxylic acids. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
63
|
Miao J, Fang P, Jagdeep S, Ge H. Palladium-catalyzed decarboxylative alkoxycarbonylation of potassium aryltrifluoroborates with potassium oxalate monoesters. Org Chem Front 2016. [DOI: 10.1039/c5qo00349k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the preparation of aryl esters has been developed via Pd-catalyzed decarboxylative coupling of potassium aryltrifluoroborates and potassium oxalate monoesters.
Collapse
Affiliation(s)
- Jinmin Miao
- Department of Chemistry and Chemical biology
- Indiana University Purdue University Indianapolis
- Indianapolis
- USA
| | - Ping Fang
- Department of Chemistry and Chemical biology
- Indiana University Purdue University Indianapolis
- Indianapolis
- USA
| | - Sahota Jagdeep
- Department of Chemistry and Chemical biology
- Indiana University Purdue University Indianapolis
- Indianapolis
- USA
| | - Haibo Ge
- Department of Chemistry and Chemical biology
- Indiana University Purdue University Indianapolis
- Indianapolis
- USA
| |
Collapse
|
64
|
Purohit VB, Karad SC, Patel KH, Raval DK. Palladium N-heterocyclic carbene catalyzed expected and unexpected C–C and C–N functionalization reactions of 1-aryl-3-methyl-1H-pyrazol-5(4H)-ones. RSC Adv 2016. [DOI: 10.1039/c6ra22779a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A palladium N-heterocyclic carbene complex of vitamin B1 developed earlier in our laboratory was successfully employed as an efficient catalyst for the regioselective C–C and C–N functionalization reactions of 1-aryl-3-methyl-1H-pyrazol-5(4H)-ones.
Collapse
Affiliation(s)
- Vishal B. Purohit
- Department of Chemistry
- Sardar Patel University
- Vallabh Vidyanagar-388 120
- India
| | - Sharad C. Karad
- Department of Chemistry
- Sardar Patel University
- Vallabh Vidyanagar-388 120
- India
| | - Kirit H. Patel
- Department of Chemistry
- Sardar Patel University
- Vallabh Vidyanagar-388 120
- India
| | - Dipak K. Raval
- Department of Chemistry
- Sardar Patel University
- Vallabh Vidyanagar-388 120
- India
| |
Collapse
|
65
|
Li ZY, Wang GW. Palladium-Catalyzed Decarboxylative Ortho-Ethoxycarbonylation of O-Methyl Ketoximes and 2-Arylpyridines with Potassium Oxalate Monoester. Org Lett 2015; 17:4866-9. [DOI: 10.1021/acs.orglett.5b02422] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Zhong-Yuan Li
- CAS Key
Laboratory of Soft
Matter Chemistry, Collaborative Innovation Center of Chemistry for
Energy Materials (iChem), Hefei National Laboratory for Physical Sciences
at Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Guan-Wu Wang
- CAS Key
Laboratory of Soft
Matter Chemistry, Collaborative Innovation Center of Chemistry for
Energy Materials (iChem), Hefei National Laboratory for Physical Sciences
at Microscale, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| |
Collapse
|
66
|
Thompson SJ, Thach DQ, Dong G. Cyclic Ether Synthesis via Palladium-Catalyzed Directed Dehydrogenative Annulation at Unactivated Terminal Positions. J Am Chem Soc 2015; 137:11586-9. [PMID: 26322370 DOI: 10.1021/jacs.5b07384] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Here, a palladium-catalyzed functionalization of unactivated sp(3) C-H bonds with internal alcohol nucleophiles is described. Directed by an oxime-masked alcohol, annulation chemoselectively occurs at the β position, leading to a range of aliphatic cyclic ethers with four- to seven-membered rings. Tethered primary, secondary, and tertiary free hydroxyl groups can all react to give the corresponding cyclized products. In addition, benzyl and silyl protected alcohols can also be directly coupled. An sp(3) C-H activation/intramolecular SN2 pathway was proposed.
Collapse
Affiliation(s)
- Samuel J Thompson
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Danny Q Thach
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Guangbin Dong
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| |
Collapse
|
67
|
Wang C, Yang Y, Qin D, He Z, You J. Copper-Catalyzed Intramolecular Dehydrogenative Amidation of Unactivated C(sp3)–H Bonds Using O2 as the Sole Oxidant. J Org Chem 2015; 80:8424-9. [PMID: 26247345 DOI: 10.1021/acs.joc.5b01302] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chunxia Wang
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, and
State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yudong Yang
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, and
State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Dekun Qin
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, and
State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Zhen He
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, and
State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, and
State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| |
Collapse
|
68
|
Rh(III)-catalyzed direct C–H cyanation of N-methoxybenzamides using N-cyano-N-phenyl-p-toluenesulfonamide. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60872-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
69
|
He Y, Mao J, Rong G, Yan H, Zhang G. Iron-Catalyzed Esterification of Benzyl CH Bonds to Form α-Keto Benzyl Esters. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500252] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
70
|
Zhang H, Hu RB, Zhang XY, Li SX, Yang SD. Palladium-catalyzed R2(O)P directed C(sp2)-H acetoxylation. Chem Commun (Camb) 2015; 50:4686-9. [PMID: 24658145 DOI: 10.1039/c4cc01238k] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and efficient Pd-catalyzed C-H acetoxylation is described. The approach uses R2(O)P as a directing group to synthesize various substituted 2'-phosphorylbiphenyl-2-OAc compounds. Notably, the reaction exhibits smooth operation under mild conditions and shows good functional group tolerance. Products are obtained with high selectivity and yields.
Collapse
Affiliation(s)
- Heng Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | | | | | | | | |
Collapse
|
71
|
Li G, Wan L, Zhang G, Leow D, Spangler J, Yu JQ. Pd(II)-catalyzed C-H functionalizations directed by distal weakly coordinating functional groups. J Am Chem Soc 2015; 137:4391-7. [PMID: 25768039 PMCID: PMC4431596 DOI: 10.1021/ja5126897] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Ortho-C(sp(2))-H olefination and acetoxylation of broadly useful synthetic building blocks phenylacetyl Weinreb amides, esters, and ketones are developed without installing an additional directing group. The interplay between the distal weak coordination and the ligand-acceleration is crucial for these reactions to proceed under mild conditions. The tolerance of longer distance between the target C-H bonds and the directing functional groups also allows for the functionalizations of more distal C-H bonds in hydrocinnamoyl ketones, Weinreb amides, and biphenyl Weinreb amides. Mechanistically, the coordination of these carbonyl groups and the bisdentate amino acid ligand with Pd(II) centers provides further evidence for our early hypothesis that the carbonyl groups of the potassium carboxylate are responsible for the directed C-H activation of carboxylic acids.
Collapse
Affiliation(s)
- Gang Li
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| | - Li Wan
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| | - Guofu Zhang
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| | - Dasheng Leow
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| | - Jillian Spangler
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037
| |
Collapse
|
72
|
Dong J, Liu P, Sun P. Palladium-Catalyzed Aryl C(sp2)–H Bond Hydroxylation of 2-Arylpyridine Using TBHP as Oxidant. J Org Chem 2015; 80:2925-9. [DOI: 10.1021/acs.joc.5b00167] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiawei Dong
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
| | - Ping Liu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| |
Collapse
|
73
|
Ruan GY, Zhang Y, Qi ZH, Ai DX, Liu W, Wang Y. The mechanism of Cu-catalyzed C–N cyclization from N-phenylbenzamidine to 2-phenylbenzimidazole: A DFT study. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2014.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
74
|
Krylov IB, Vil’ VA, Terent’ev AO. Cross-dehydrogenative coupling for the intermolecular C-O bond formation. Beilstein J Org Chem 2015; 11:92-146. [PMID: 25670997 PMCID: PMC4311763 DOI: 10.3762/bjoc.11.13] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 12/31/2014] [Indexed: 12/11/2022] Open
Abstract
The present review summarizes primary publications on the cross-dehydrogenative C-O coupling, with special emphasis on the studies published after 2000. The starting compound, which donates a carbon atom for the formation of a new C-O bond, is called the CH-reagent or the C-reagent, and the compound, an oxygen atom of which is involved in the new bond, is called the OH-reagent or the O-reagent. Alcohols and carboxylic acids are most commonly used as O-reagents; hydroxylamine derivatives, hydroperoxides, and sulfonic acids are employed less often. The cross-dehydrogenative C-O coupling reactions are carried out using different C-reagents, such as compounds containing directing functional groups (amide, heteroaromatic, oxime, and so on) and compounds with activated C-H bonds (aldehydes, alcohols, ketones, ethers, amines, amides, compounds containing the benzyl, allyl, or propargyl moiety). An analysis of the published data showed that the principles at the basis of a particular cross-dehydrogenative C-O coupling reaction are dictated mainly by the nature of the C-reagent. Hence, in the present review the data are classified according to the structures of C-reagents, and, in the second place, according to the type of oxidative systems. Besides the typical cross-dehydrogenative coupling reactions of CH- and OH-reagents, closely related C-H activation processes involving intermolecular C-O bond formation are discussed: acyloxylation reactions with ArI(O2CR)2 reagents and generation of O-reagents in situ from C-reagents (methylarenes, aldehydes, etc.).
Collapse
Affiliation(s)
- Igor B Krylov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Alexander O Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| |
Collapse
|
75
|
Dey S, Gadakh SK, Sudalai A. Titanium superoxide – a stable recyclable heterogeneous catalyst for oxidative esterification of aldehydes with alkylarenes or alcohols using TBHP as an oxidant. Org Biomol Chem 2015; 13:10631-40. [DOI: 10.1039/c5ob01586c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A single step catalytic approach for the synthesis of esters from aldehydes using a recyclable heterogeneous catalyst is described.
Collapse
Affiliation(s)
- Soumen Dey
- Chemical Engineering & Process Development Division
- National Chemical Laboratory
- Pune-411008
- India
| | - Sunita K. Gadakh
- Chemical Engineering & Process Development Division
- National Chemical Laboratory
- Pune-411008
- India
| | - A. Sudalai
- Chemical Engineering & Process Development Division
- National Chemical Laboratory
- Pune-411008
- India
| |
Collapse
|
76
|
Zhou H, Gai K, Lin A, Xu J, Wu X, Yao H. Palladium-catalyzed oxidative cross-coupling of azole-4-carboxylates with indoles: an approach to the synthesis of pimprinine. Org Biomol Chem 2015; 13:1243-8. [DOI: 10.1039/c4ob01844c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A palladium-catalyzed oxidative cross-coupling reaction between azole-4-carboxylates and indoles forming 5-(3-indolyl)azoles with excellent regioselectivity has been developed.
Collapse
Affiliation(s)
- Haipin Zhou
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Kuo Gai
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Xiaoming Wu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| |
Collapse
|
77
|
Villuendas P, Serrano E, Urriolabeitia EP. Pd-catalysed ortho-alkoxylation of benzamides N-protected with an iminophosphorane functionality. NEW J CHEM 2015. [DOI: 10.1039/c5nj00189g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mild Pd-catalysed ortho-alkoxylation of benzamides, protected as keto-stabilised iminophosphoranes, with alcohols, is regioselective and tolerates different substituents and alcohols.
Collapse
Affiliation(s)
- Pedro Villuendas
- Instituto de Síntesis Química y Catálisis Homogénea
- ISQCH (CSIC-Universidad de Zaragoza)
- 50009 Zaragoza
- Spain
| | - Elena Serrano
- Centro Universitario de la Defensa
- Academia General Militar
- 50090 Zaragoza
- Spain
| | - Esteban P. Urriolabeitia
- Instituto de Síntesis Química y Catálisis Homogénea
- ISQCH (CSIC-Universidad de Zaragoza)
- 50009 Zaragoza
- Spain
| |
Collapse
|
78
|
|
79
|
|
80
|
Chen Z, Wang B, Zhang J, Yu W, Liu Z, Zhang Y. Transition metal-catalyzed C–H bond functionalizations by the use of diverse directing groups. Org Chem Front 2015. [DOI: 10.1039/c5qo00004a] [Citation(s) in RCA: 1238] [Impact Index Per Article: 137.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In this review, a summary of transition metal-catalyzed C–H activation by utilizing the functionalities as directing groups is presented.
Collapse
Affiliation(s)
- Zhengkai Chen
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Binjie Wang
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Jitan Zhang
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Wenlong Yu
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhanxiang Liu
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yuhong Zhang
- ZJU-NHU United R&D Center
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| |
Collapse
|
81
|
Li DD, Cao YX, Wang GW. Palladium-catalyzed ortho-acyloxylation of N-nitrosoanilines via direct sp2 C–H bond activation. Org Biomol Chem 2015; 13:6958-64. [DOI: 10.1039/c5ob00691k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The palladium-catalyzed N-nitroso-directed ortho-acyloxylation of N-nitrosoanilines has been demonstrated via sp2 C–H activation with PhI(OAc)2 as the oxidant and Ac2O/AcOH (1 : 1) or C2H5CO2H as the reaction medium.
Collapse
Affiliation(s)
- Dan-Dan Li
- Hefei National Laboratory for Physical Sciences at Microscale
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- and Department of Chemistry
- University of Science and Technology of China
- Hefei
| | - Yi-Xuan Cao
- Hefei National Laboratory for Physical Sciences at Microscale
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- and Department of Chemistry
- University of Science and Technology of China
- Hefei
| | - Guan-Wu Wang
- Hefei National Laboratory for Physical Sciences at Microscale
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- and Department of Chemistry
- University of Science and Technology of China
- Hefei
| |
Collapse
|
82
|
Zhang LB, Hao XQ, Zhang SK, Liu K, Ren B, Gong JF, Niu JL, Song MP. Copper-Mediated Direct Alkoxylation of Arenes Using an N,O-Bidentate Directing System. J Org Chem 2014; 79:10399-409. [DOI: 10.1021/jo502005j] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lin-Bao Zhang
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Xin-Qi Hao
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Shou-Kun Zhang
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Ke Liu
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Baozeng Ren
- School
of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jun-Fang Gong
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jun-Long Niu
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Mao-Ping Song
- The
College of Chemistry and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| |
Collapse
|
83
|
Gao T, Sun P. Palladium-catalyzed N-nitroso-directed C-H alkoxylation of arenes and subsequent formation of 2-alkoxy-N-alkylarylamines. J Org Chem 2014; 79:9888-93. [PMID: 25251557 DOI: 10.1021/jo501902d] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A palladium-catalyzed direct ortho-alkoxylation of N-alkyl-N-nitrosoarylamines was developed in which alcohols were used as the alkoxylation reagents and PhI(OAc)2 was employed as the oxidant. The protocol was available for both primary and secondary alcohols. The products were transformed to o-alkoxy-N-alkylanilines expediently by a simple reduction.
Collapse
Affiliation(s)
- Tingting Gao
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210097, China
| | | |
Collapse
|
84
|
Shi W, Shi Z. Palladium-Catalyzed 2H-1,2,3-Triazole-Directed Oxidative Alkoxylation of Arenes with Alcohols. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400462] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
85
|
Jiang Q, Wang JY, Guo C. Iodine(III)-Mediated C–H Alkoxylation of Aniline Derivatives with Alcohols under Metal-Free Conditions. J Org Chem 2014; 79:8768-73. [DOI: 10.1021/jo501601u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Qing Jiang
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
| | - Jing-Yu Wang
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
| | - Cancheng Guo
- College of Chemistry and
Chemical Engineering, Advanced Catalytic Engineering Research Center
of the Ministry of Education, Hunan University, Changsha 410082, P.R. China
| |
Collapse
|
86
|
Zhang C, Sun P. Palladium-catalyzed direct C(sp(2))-H alkoxylation of 2-aryloxypyridines using 2-pyridyloxyl as the directing group. J Org Chem 2014; 79:8457-61. [PMID: 25111559 DOI: 10.1021/jo5014146] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient and highly regioselective palladium-catalyzed ortho-C(sp(2))-H bond alkoxylation of 2-aryloxypyridines was developed using 2-pyridyloxyl as the directing group and alcohols as alkoxylation reagents. Under an air atmosphere and in the presence of PhI(OAc)2, the reaction gave the corresponding products in moderate to good yields, and a series of functional groups could be tolerated.
Collapse
Affiliation(s)
- Chun Zhang
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210097, China
| | | |
Collapse
|
87
|
Shi S, Kuang C. Palladium-catalyzed ortho-alkoxylation of 2-aryl-1,2,3-triazoles. J Org Chem 2014; 79:6105-12. [PMID: 24915142 DOI: 10.1021/jo5008306] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium-catalyzed alkoxylation of 2-aryl-1,2,3-triazoles was described in the presence of various groups in the aromatic rings. In addition, some other directing groups of heterocycles containing nitrogen were explored.
Collapse
Affiliation(s)
- Suping Shi
- Department of Chemistry, Tongji University , Siping Road 1239, Shanghai 200092, China
| | | |
Collapse
|
88
|
Zhang ZJ, Quan XJ, Ren ZH, Wang YY, Guan ZH. A Facile BPO-Mediated ortho-Hydroxylation and Benzoylation of N-Alkyl Anilines for Synthesis of 2-Benzamidophenols. Org Lett 2014; 16:3292-5. [DOI: 10.1021/ol501293c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhi-Jing Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Xue-Jing Quan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi’an 710069, P. R. China
| |
Collapse
|
89
|
Xiao KJ, Lin DW, Miura M, Zhu RY, Gong W, Wasa M, Yu JQ. Palladium(II)-catalyzed enantioselective C(sp³)-H activation using a chiral hydroxamic acid ligand. J Am Chem Soc 2014; 136:8138-42. [PMID: 24815880 PMCID: PMC4063184 DOI: 10.1021/ja504196j] [Citation(s) in RCA: 206] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An enantioselective method for Pd(II)-catalyzed cross-coupling of methylene β-C(sp(3))-H bonds in cyclobutanecarboxylic acid derivatives with arylboron reagents is described. High yields and enantioselectivities were achieved through the development of chiral mono-N-protected α-amino-O-methylhydroxamic acid (MPAHA) ligands, which form a chiral complex with the Pd(II) center. This reaction provides an alternative approach to the enantioselective synthesis of cyclobutanecarboxylates containing α-chiral quaternary stereocenters. This new class of chiral catalysts also show promises for enantioselective β-C(sp(3))-H activation of acyclic amides.
Collapse
Affiliation(s)
- Kai-Jiong Xiao
- Department of Chemistry, The Scripps Research Institute , 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | | | | | | | | | | | | |
Collapse
|
90
|
Péron F, Fossey C, Sopkova-de Oliveira Santos J, Cailly T, Fabis F. Room-temperature ortho-alkoxylation and -halogenation of N-tosylbenzamides by using palladium(II)-catalyzed C-H activation. Chemistry 2014; 20:7507-13. [PMID: 24827781 DOI: 10.1002/chem.201303923] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/13/2013] [Indexed: 11/08/2022]
Abstract
The N-tosylcarboxamide group can direct the room-temperature palladium-catalyzed C-H alkoxylation and halogenation of substituted arenes in a simple and mild procedure. The room-temperature stoichiometric cyclopalladation of N-tosylbenzamide was first studied, and the ability of the palladacycle to react with oxidants to form C-X and C-O bonds under mild conditions was demonstrated. The reaction conditions were then adapted to promote room-temperature ortho-alkoxylations and ortho-halogenations of N-tosylbenzamides using palladium as catalyst. The scope and limitation of both alkoxylations and halogenations was studied and the subsequent functional transformation of the N-tosylcarboxamide group through nucleophilic additions was evaluated. This methodology offers a simple and mild route to diversely functionalized arenes.
Collapse
Affiliation(s)
- Florent Péron
- Normandie Université (France); Université de Caen Basse-Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M, - SF 4206 ICORE) UFR des Sciences Pharmaceutiques, Bd Becquerel, CS 14032 Caen cedex 5 (France), Fax: (+33) 231566803
| | | | | | | | | |
Collapse
|
91
|
Wang Z, Kuang C. Palladium‐Catalyzed Acyloxylation of 2‐Substituted 1,2,3‐Triazoles
via
Direct
sp
2
CH Bond Activation. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400096] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Zechao Wang
- Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
| | - Chunxiang Kuang
- Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, People's Republic of China
- Key Laboratory of Yangze River Water Environment, Ministry of Education, Siping Road 1239, Shanghai 200092, People's Republic of China
| |
Collapse
|
92
|
Venkateswarlu V, Kumar KAA, Balgotra S, Reddy GL, Srinivas M, Vishwakarma RA, Sawant SD. CH Oxygenation andN-Trifluoroacylation of Arylamines Under Metal-Free Conditions: A Convenient Approach to 2-Aminophenols andN-Trifluoroacyl-ortho-aminophenols. Chemistry 2014; 20:6641-5. [DOI: 10.1002/chem.201402411] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Indexed: 11/05/2022]
|
93
|
Anand M, Sunoj RB, Schaefer HF. Non-innocent additives in a palladium(II)-catalyzed C-H bond activation reaction: insights into multimetallic active catalysts. J Am Chem Soc 2014; 136:5535-8. [PMID: 24697273 DOI: 10.1021/ja412770h] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The role of a widely employed additive (AgOAc) in a palladium acetate-catalyzed ortho-C-H bond activation reaction has been examined using the M06 density functional theory. A new hetero-bimetallic Pd-(μ-OAc)3-Ag is identified as the most likely active species. This finding could have far-reaching implications with respect to the notion of the active species in palladium catalysis in the presence of other metal salt additives.
Collapse
Affiliation(s)
- Megha Anand
- Center for Computational Quantum Chemistry, University of Georgia Athens, Georgia 30602, United States
| | | | | |
Collapse
|
94
|
Padala K, Jeganmohan M. ortho-Benzoxylation ofN-Alkyl Benzamides with Aromatic Acids Catalyzed by Ruthenium(II) Complex. Chemistry 2014; 20:4092-7. [DOI: 10.1002/chem.201304646] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Indexed: 11/06/2022]
|
95
|
Hao XQ, Chen LJ, Ren B, Li LY, Yang XY, Gong JF, Niu JL, Song MP. Copper-Mediated Direct Aryloxylation of Benzamides Assisted by an N,O-Bidentate Directing Group. Org Lett 2014; 16:1104-7. [DOI: 10.1021/ol500166d] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xin-Qi Hao
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Li-Juan Chen
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Baozeng Ren
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Liu-Yan Li
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Xin-Yan Yang
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jun-Fang Gong
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jun-Long Niu
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Mao-Ping Song
- The College of Chemistry
and Molecular Engineering, Henan Key Laboratory
of Chemical Biology and Organic Chemistry and ‡School of Chemical Engineering and
Energy, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| |
Collapse
|
96
|
Rit RK, Yadav MR, Sahoo AK. Pd(II)-Catalyzed ortho-C–H Oxidation of Arylacetic Acid Derivatives: Synthesis of Benzofuranones. Org Lett 2014; 16:968-71. [DOI: 10.1021/ol403699d] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Raja K. Rit
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - M. Ramu Yadav
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - Akhila K. Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| |
Collapse
|
97
|
Takemura N, Kuninobu Y, Kanai M. Copper-catalyzed benzylic C(sp3)–H alkoxylation of heterocyclic compounds. Org Biomol Chem 2014; 12:2528-32. [DOI: 10.1039/c4ob00215f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intra- and intermolecular C(sp3)–H alkoxylation on a gram scale.
Collapse
Affiliation(s)
- Noriaki Takemura
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Bunkyo-ku, Japan
| | - Yoichiro Kuninobu
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Bunkyo-ku, Japan
- ERATO
- Japan Science and Technology Agency (JST)
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Bunkyo-ku, Japan
- ERATO
- Japan Science and Technology Agency (JST)
| |
Collapse
|
98
|
Selective C4−F bond cleavage/C−O bond formation of polyfluoroarenes with phenols and benzyl alcohols. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.08.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
99
|
Shan G, Yang X, Zong Y, Rao Y. An efficient palladium-catalyzed C-H alkoxylation of unactivated methylene and methyl groups with cyclic hypervalent iodine (i(3+) ) oxidants. Angew Chem Int Ed Engl 2013; 52:13606-10. [PMID: 24214420 DOI: 10.1002/anie.201307090] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/20/2013] [Indexed: 11/12/2022]
Abstract
All the hype: The title reaction has been developed for the facile synthesis of a variety of complex alkyl ethers. Cyclic hypervalent iodine (I(3+) ) reagents serve as oxidants for this unique CH alkoxylation reaction. The reaction demonstrates excellent reactivity, good functional-group tolerance, and high yields. Q=8-aminoquinoline-derived auxiliary.
Collapse
Affiliation(s)
- Gang Shan
- MOE Key Laboratory of Protein Sciences, Department of Pharmacology and Pharmaceutical Sciences, School of Medicine and School of Life Sciences, Tsinghua University, Beijing, 100084 (China)
| | | | | | | |
Collapse
|
100
|
Shan G, Yang X, Zong Y, Rao Y. An Efficient Palladium-Catalyzed CH Alkoxylation of Unactivated Methylene and Methyl Groups with Cyclic Hypervalent Iodine (I3+) Oxidants. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|