1
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Yin F, Chen Y, Luo Z, Li S, Zhang Y, Wan S, Li X, Kong L, Wang X. Regioselective Olefination and Arylation of Arene-Tethered Diols Using the Easily Foldable Directing Groups. Org Lett 2024; 26:1463-1467. [PMID: 38349252 DOI: 10.1021/acs.orglett.4c00096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Arene-tethered diols constitute a valuable class of structural motifs of drug and bioactive natural product molecules. In this study, a regioselective protocol for olefination and arylation of arene-tethered 1,2-diols and 1,3-diols has been developed using easily foldable acetal structures for attaching pyridine and nitrile directing groups. The method overcomes the steric hindrance effect of the short-chain diols and affords products in high yield and regioselectivity. This efficient cascaded catalysis has been successfully utilized in the syntheses of natural products such as peucedanol, decursinol, and marmesin.
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Affiliation(s)
- Fucheng Yin
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Yifan Chen
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Zhongwen Luo
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Shang Li
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Yonglei Zhang
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Siyuan Wan
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xinxin Li
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Lingyi Kong
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiaobing Wang
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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2
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Yin F, Chen Y, Luo Z, Li S, Kong L, Wang X. Aryl Halides as Halogenation Reagents in the Bromination and Iodination of Arene-Tethered Diols. Org Lett 2022; 24:6510-6514. [PMID: 36052998 DOI: 10.1021/acs.orglett.2c02358] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aromatic halides constitute a valuable class of building blocks that are commonly used in organic synthesis. In this study, we demonstrate usage of aryl bromides and aryl iodides in C-Br or C-I bond formation. Methyl 2-bromobenzoate and 2-nitrophenyl iodides were developed as mild and effective bromination and iodination reagents for functionalization of arene-tethered diols. This efficient cascaded catalysis can be applied to the total syntheses of natural product Mafaicheenamine A and Claulamine A.
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Affiliation(s)
- Fucheng Yin
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Yifan Chen
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Zhongwen Luo
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Shang Li
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Lingyi Kong
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiaobing Wang
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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3
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Motiwala HF, Armaly AM, Cacioppo JG, Coombs TC, Koehn KRK, Norwood VM, Aubé J. HFIP in Organic Synthesis. Chem Rev 2022; 122:12544-12747. [PMID: 35848353 DOI: 10.1021/acs.chemrev.1c00749] [Citation(s) in RCA: 117] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) is a polar, strongly hydrogen bond-donating solvent that has found numerous uses in organic synthesis due to its ability to stabilize ionic species, transfer protons, and engage in a range of other intermolecular interactions. The use of this solvent has exponentially increased in the past decade and has become a solvent of choice in some areas, such as C-H functionalization chemistry. In this review, following a brief history of HFIP in organic synthesis and an overview of its physical properties, literature examples of organic reactions using HFIP as a solvent or an additive are presented, emphasizing the effect of solvent of each reaction.
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Affiliation(s)
- Hashim F Motiwala
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Ahlam M Armaly
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jackson G Cacioppo
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Thomas C Coombs
- Department of Chemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403 United States
| | - Kimberly R K Koehn
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Verrill M Norwood
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jeffrey Aubé
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
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4
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Lam NYS, Fan Z, Wu K, Park HS, Shim SY, Strassfeld DA, Yu JQ. Empirical Guidelines for the Development of Remote Directing Templates through Quantitative and Experimental Analyses. J Am Chem Soc 2022; 144:2793-2803. [PMID: 35108009 PMCID: PMC9170077 DOI: 10.1021/jacs.1c12654] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ability to differentiate and selectively activate remote C-H bonds represents a perennial challenge in the field of C-H activation. Since its first report in 2012, a now-established "directing template" (DT) approach remains demonstrably effective for the functionalization of remote C-H bonds. As selectivity is hypothesized to be principally determined by the optimal positioning of the reactive catalyst to a target C-H bond, a DT's spatial factors are particularly important toward achieving high selectivity, though a systematic study on its requisite factors remain unelucidated. Through an in-depth analysis of 119 structurally unique published remote DTs, this report summarizes the key factors that are central toward achieving high selectivity at defined aryl positions, which are experimentally corroborated through the development of new aliphatic meta and para-selective DTs for electronically unbiased arenes. These empirical rules, which summarize key distance and geometric factors, are expected to be useful tools for the future development of site-selective arene C-H activation as well as other reactions that rely on covalent/noncovalent DT-mediated remote regioselection.
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Affiliation(s)
- Nelson Y. S. Lam
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Kevin Wu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Han Seul Park
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Su Yong Shim
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Daniel A. Strassfeld
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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5
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Chen J, Bai C, Ma H, Liu D, Bao YS. Nano palladium catalyzed C(sp3) H bonds arylation by a transient directing strategy. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.02.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Dutta U, Porey S, Pimparkar S, Mandal A, Grover J, Koodan A, Maiti D. para
‐Selective Arylation of Arenes: A Direct Route to Biaryls by Norbornene Relay Palladation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005664] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Uttam Dutta
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Sandip Porey
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Sandeep Pimparkar
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Astam Mandal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Jagrit Grover
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Adithyaraj Koodan
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
- Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science Tokyo Institute of Technology Tokyo 152-8550 Japan
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7
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Dutta U, Porey S, Pimparkar S, Mandal A, Grover J, Koodan A, Maiti D. para-Selective Arylation of Arenes: A Direct Route to Biaryls by Norbornene Relay Palladation. Angew Chem Int Ed Engl 2020; 59:20831-20836. [PMID: 32754958 DOI: 10.1002/anie.202005664] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/29/2020] [Indexed: 12/12/2022]
Abstract
Biaryl compounds are extremely important structural motifs in natural products, biologically active components and pharmaceuticals. Selective synthesis of biaryls by distinguishing the subtle reactivity difference of distal arene C-H bonds are significantly challenging. Herein, we describe para-selective C-H arylation, which is acheived by a unique combination of a meta-directing group and norbornene as a transient mediator. Upon direct meta-C-H palladation, one-bond relay palladation occurs in presence of norbornene and subsequently para-C-H arylation is achieved for sulfonates, phosphonates and phenols bearing 2,6-disubstitution patterns. The protocol is amenable to electron-deficient aryl iodides. Multisubstituted arenes and phenols are obtained by postsynthetic modification of the products. The protocol allows the synthesis of hexa-substituted benzene by sequential selective distal C-H functionalization.
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Affiliation(s)
- Uttam Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Sandeep Pimparkar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Astam Mandal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Jagrit Grover
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Adithyaraj Koodan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.,Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, Tokyo, 152-8550, Japan
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8
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Rej S, Ano Y, Chatani N. Bidentate Directing Groups: An Efficient Tool in C-H Bond Functionalization Chemistry for the Expedient Construction of C-C Bonds. Chem Rev 2020; 120:1788-1887. [PMID: 31904219 DOI: 10.1021/acs.chemrev.9b00495] [Citation(s) in RCA: 578] [Impact Index Per Article: 144.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
During the past decades, synthetic organic chemistry discovered that directing group assisted C-H activation is a key tool for the expedient and siteselective construction of C-C bonds. Among the various directing group strategies, bidentate directing groups are now recognized as one of the most efficient devices for the selective functionalization of certain positions due to fact that its metal center permits fine, tunable, and reversible coordination. The family of bidentate directing groups permit various types of assistance to be achieved, such as N,N-dentate, N,O-dentate, and N,S-dentate auxiliaries, which are categorized based on the coordination site. In this review, we broadly discuss various C-H bond functionalization reactions for the formation of C-C bonds with the aid of bidentate directing groups.
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Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
| | - Yusuke Ano
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering , Osaka University , Suita , Osaka 560-0871 , Japan
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9
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Xie S, Li S, Ma W, Xu X, Jin Z. Chelation-directed remote meta-C-H functionalization of aromatic aldehydes and ketones. Chem Commun (Camb) 2019; 55:12408-12411. [PMID: 31566641 DOI: 10.1039/c9cc05807a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We disclose herein the development of a versatile 1,2-diol directing template for palladium-catalyzed remote meta-C-H functionalization of aromatic aldehydes and ketones. In situ-generation of acetals and ketals, as well as removal afterwards, makes the C-H bond functionalization process more straightforward and efficient. This also represents the first example of chelation-directed meta-C-H functionalization of aromatic aldehydes and ketones.
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Affiliation(s)
- Shuguang Xie
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Sen Li
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Wenqian Ma
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Xiaohua Xu
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Zhong Jin
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
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10
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Chen J, Xu J, Zhou Y, Xie S, Gao F, Xu X, Xu X, Jin Z. Sequential ortho-C-H and ipso-C-O Functionalization Using a Bifunctional Directing Group. Org Lett 2019; 21:7928-7932. [PMID: 31516000 DOI: 10.1021/acs.orglett.9b02910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Design of C-H activation directing groups that can serve as electrophiles for subsequent cross-coupling significantly improves the step economy of synthetic applications of directed C-H functionalization. Through using a well-defined bifunctional template, palladium-catalyzed ortho-C-H alkenylation and arylation of benzylic alcohols was achieved via an end-on nitrile-embedded 12-membered macrocyclic transition state. Thereafter, the directing template is used as a handle for palladium-catalyzed ipso-C-O cross-coupling to provide functionalized diarylmethanes.
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Affiliation(s)
- Jingjing Chen
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Jiancong Xu
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Yu Zhou
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Shuguang Xie
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Feng Gao
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Xiufang Xu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Xiaohua Xu
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Zhong Jin
- State Key Laboratory and Institute of Elementoorganic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
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11
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Fu X, Yang J, Deng K, Shao L, Xia C, Ji Y. Tandem C–C/C–N Formation via Palladium-Catalyzed C–H Activation/Styrenation and Sequential Annulation of O-Methylketoxime with Styrenes. Org Lett 2019; 21:3505-3509. [DOI: 10.1021/acs.orglett.9b00702] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xiaopan Fu
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jinyue Yang
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Kezuan Deng
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Lingyan Shao
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Chengcai Xia
- Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, 619 Changcheng Road, Taian 271016, P. R. China
| | - Yafei Ji
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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12
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Sk MR, Bera SS, Maji MS. Cp*Co(III)‐Catalyzed C−H Alkenylation of Aromatic Ketones with Alkenes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801385] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Md Raja Sk
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, W. B. India
| | - Sourav Sekhar Bera
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, W. B. India
| | - Modhu Sudan Maji
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302, W. B. India
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13
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St John-Campbell S, Bull JA. Transient imines as ‘next generation’ directing groups for the catalytic functionalisation of C–H bonds in a single operation. Org Biomol Chem 2018; 16:4582-4595. [DOI: 10.1039/c8ob00926k] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review describes recent developments in the use of catalytic transient directing groups, through imine linkages, which in combination with transition metal catalysts provide streamlined C–H functionalisation processes.
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Affiliation(s)
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- South Kensington
- London
- UK
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14
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Affiliation(s)
- Marino Petrini
- School of Science and Technology, Chemistry Division Università di Camerino Via S. Agostino, 1. 62032 Camerino Italy
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15
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Li Q, Ferreira EM. Meta-Selective C-H Arylation of Aromatic Alcohols with a Readily Attachable and Cleavable Molecular Scaffold. Chemistry 2017; 23:11519-11523. [PMID: 28675786 PMCID: PMC5984653 DOI: 10.1002/chem.201703054] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Indexed: 01/11/2023]
Abstract
The first example of meta-selective C-H arylations of arene alcohol-based substrates is described. The strategy involves the combination of the transient norbornene strategy with the quinoline-based acetal scaffold to achieve the formation of biaryl compounds. Both a two-step meta-arylation/scaffold cleavage process and a total telescoping procedure are described, highlighting the convenient attributes of attachment, removal, and recovery of the acetal scaffold. Moreover, the meta-arylated compounds can be further derivatized via ortho-selective functionalizations. These processes establish a foundation for catalytic polyfunctionalization of alcohol-based compounds.
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Affiliation(s)
- Qiankun Li
- Department of Chemistry, University of Georgia, Athens, GA 30602 (USA)
| | - Eric M. Ferreira
- Department of Chemistry, University of Georgia, Athens, GA 30602 (USA)
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16
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St John-Campbell S, White AJP, Bull JA. Single operation palladium catalysed C(sp 3)-H functionalisation of tertiary aldehydes: investigations into transient imine directing groups. Chem Sci 2017; 8:4840-4847. [PMID: 28959406 PMCID: PMC5603794 DOI: 10.1039/c7sc01218g] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 04/30/2017] [Indexed: 01/17/2023] Open
Abstract
Mono and bidentate amine directing groups formed transiently though imine linkages promote C–H arylation of tertiary aldehydes.
Simple amine and diamine derivatives can promote the palladium catalysed direct β-C–H arylation of aliphatic aldehydes via transient imine formation. Trifluoroacetate was shown to be crucial in promoting the reaction. Sub-stoichiometric quantities of simple N-tosylethylenediamine was shown to form a bidentate directing group with an imine linkage. Isolation of an unsymmetrical palladacycle has shown different potential binding modes of the secondary NTs coordinating group by single crystal X-ray diffraction analysis, suggestive of a hemilabile ligand.
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Affiliation(s)
- S St John-Campbell
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - A J P White
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
| | - J A Bull
- Department of Chemistry , Imperial College London , South Kensington , London , SW7 2AZ , UK .
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17
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Ma W, Gandeepan P, Li J, Ackermann L. Recent advances in positional-selective alkenylations: removable guidance for twofold C–H activation. Org Chem Front 2017. [DOI: 10.1039/c7qo00134g] [Citation(s) in RCA: 275] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Recent advances in transition-metal catalyzed positional-selective alkenylations via twofold C–H activation directed by removable or traceless directing groups are reviewed.
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Affiliation(s)
- Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
| | - Jie Li
- School of Pharmaceutical Science
- Jiangnan University
- 214122 Wuxi
- P. R. China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
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18
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Ping L, Chung DS, Bouffard J, Lee SG. Transition metal-catalyzed site- and regio-divergent C–H bond functionalization. Chem Soc Rev 2017; 46:4299-4328. [DOI: 10.1039/c7cs00064b] [Citation(s) in RCA: 354] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The regioselectivity of C–H functionalization reactions can be redirected to obtain regioisomeric products form the same starting materials.
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Affiliation(s)
- Lucy Ping
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 03760 Seoul
- Korea
| | - Da Sol Chung
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 03760 Seoul
- Korea
| | - Jean Bouffard
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 03760 Seoul
- Korea
| | - Sang-gi Lee
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 03760 Seoul
- Korea
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19
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Li Q, Knight BJ, Ferreira EM. Palladium(II)-Catalyzed ortho-Arylation of Aromatic Alcohols with a Readily Attachable and Cleavable Molecular Scaffold. Chemistry 2016; 22:13054-8. [PMID: 27428050 PMCID: PMC5984652 DOI: 10.1002/chem.201602844] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Indexed: 01/22/2023]
Abstract
A palladium(II)-catalyzed C-H arylation process of alcohols has been developed. The strategy utilizes a novel quinoline-based hemiacetal scaffold that can direct the selective C-H bond functionalization. This reaction provides a useful method to construct biaryl compounds of benzyl alcohols in good to excellent yields. The new molecular scaffold can be readily attached, removed, and recovered.
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Affiliation(s)
- Qiankun Li
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Brian J Knight
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Eric M Ferreira
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
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