201
|
Wang L, Zhong Q, Zou Y, Yin Y, Wu A, Chen Q, Zhang K, Jiang J, Zhao M, Zhang H. Carbon-carbon bond activation by B(OMe) 3/B 2pin 2-mediated fragmentation borylation. Chem Sci 2021; 12:15104-15109. [PMID: 34909151 PMCID: PMC8612372 DOI: 10.1039/d1sc04487g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 10/26/2021] [Indexed: 11/30/2022] Open
Abstract
Selective carbon–carbon bond activation is important in chemical industry and fundamental organic synthesis, but remains challenging. In this study, non-polar unstrained Csp2–Csp3 and Csp2–Csp2 bond activation was achieved by B(OMe)3/B2pin2-mediated fragmentation borylation. Various indole derivatives underwent C2-regioselective C–C bond activation to afford two C–B bonds under transition-metal-free conditions. Preliminary mechanistic investigations suggested that C–B bond formation and C–C bond cleavage probably occurred in a concerted process. This new reaction mode will stimulate the development of reactions based on inert C–C bond activation. Non-polar unstrained Csp2–Csp3 and Csp2–Csp2 bond activation was achieved via B(OMe)3/B2pin2-mediated fragmentation borylation, in which C–C bond activation occurred regioselectively at the C2-position in various substituted indoles.![]()
Collapse
Affiliation(s)
- Li Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities Wuhan 430074 China .,College of Chemistry, Nanchang University Nanchang 330031 China
| | - Qi Zhong
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities Wuhan 430074 China .,College of Chemistry, Nanchang University Nanchang 330031 China
| | - Youliang Zou
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Youzhi Yin
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Aizhen Wu
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Quan Chen
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Ke Zhang
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Jiachen Jiang
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Mengzhen Zhao
- College of Chemistry, Nanchang University Nanchang 330031 China
| | - Hua Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities Wuhan 430074 China .,College of Chemistry, Nanchang University Nanchang 330031 China
| |
Collapse
|
202
|
Zuo Z, Daniliuc CG, Studer A. Cooperative NHC/Photoredox Catalyzed Ring‐Opening of Aryl Cyclopropanes to 1‐Aroyloxylated‐3‐Acylated Alkanes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhijun Zuo
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| |
Collapse
|
203
|
Zuo Z, Daniliuc CG, Studer A. Cooperative NHC/Photoredox Catalyzed Ring-Opening of Aryl Cyclopropanes to 1-Aroyloxylated-3-Acylated Alkanes. Angew Chem Int Ed Engl 2021; 60:25252-25257. [PMID: 34580972 PMCID: PMC9298441 DOI: 10.1002/anie.202110304] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/18/2021] [Indexed: 12/30/2022]
Abstract
Cyclopropanes are an important class of building blocks in organic synthesis. Herein, a ring-opening/arylcarboxylation/acylation cascade reaction for the 1,3-difunctionalization of aryl cyclopropanes enabled by cooperative NHC and organophotoredox catalysis is reported. The cascade works on monosubstituted cyclopropanes that are in contrast to the heavily investigated donor-acceptor cyclopropanes more challenging to be difunctionalized. The key step is a radical/radical cross coupling of a benzylic radical generated in the photoredox catalysis cycle with a ketyl radical from the NHC catalysis cycle. The transformation features metal-free reaction conditions and tolerates a diverse range of functionalities.
Collapse
Affiliation(s)
- Zhijun Zuo
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Armido Studer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| |
Collapse
|
204
|
Wu J, Li L, Liu M, Bai L, Luan X. Selective C(sp 3 )-N Bond Cleavage of N,N-Dialkyl Tertiary Amines with the Loss of a Large Alkyl Group via an S N 1 Pathway. Angew Chem Int Ed Engl 2021; 61:e202113820. [PMID: 34783149 DOI: 10.1002/anie.202113820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 11/10/2022]
Abstract
Polar disconnection of the C(sp3 )-N bond of N,N-dialkyl-substituted tertiary amines via ammonium species conventionally favored the loss of the smaller alkyl group by an SN 2 displacement, while selective C(sp3 )-N bond cleavage by cutting off the larger alkyl group is still underdeveloped. Herein, we present a novel Pd0 -catalyzed [2+2+1] annulation, proceeding through an alkyne-directed palladacycle formation and consecutive diamination with a tertiary hydroxylamine by cleaving its N-O bond and one C(sp3 )-N bond, for the rapid assembly of tricyclic indoles in a single-step transformation. Noteworthy, experimental results indicated that large tert-butyl and benzyl groups were selectively cleaved via an SN 1 pathway, in the presence of a smaller alkyl group (Me, Et, i Pr). Under the guidance of this new finding, tricyclic indoles bearing a removable alkyl group could be exclusively obtained by using a (α-methyl)benzyl/benzyl or tert-butyl/2-(methoxycarbonyl)ethyl mixed amino source.
Collapse
Affiliation(s)
- Jiaoyu Wu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Linqiang Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Mengtian Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Lu Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, China
| |
Collapse
|
205
|
Sekiguchi Y, Yoshikai N. Zinc-Catalyzed β-Functionalization of Cyclopropanols via Enolized Homoenolate. J Am Chem Soc 2021; 143:18400-18405. [PMID: 34714060 DOI: 10.1021/jacs.1c10109] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report herein a zinc-catalyzed β-allylation of cyclopropanols with Morita-Baylis-Hillman (MBH) carbonates with retention of the cyclopropane ring. The reaction is promoted by a zinc aminoalkoxide catalyst, affording cyclopropyl-fused α-alkylidene-δ-valerolactone derivatives in moderate to good yields. Mechanistic experiments suggest that the present reaction does not proceed via direct β-C-H cleavage of the cyclopropanol, but involves zinc homoenolate and its enolization to generate a key bis-nucleophilic species. α-Allylation of this "enolized homoenolate" with MBH carbonate would be followed by regeneration of the cyclopropane ring and irreversible lactonization. The enolized homoenolate mechanism has also been proven to allow for β-functionalization with alkylidenemalononitrile as the reaction partner. A sequence of the present reaction and known cyclopropanol transformation provides an opportunity to transform a simple cyclopropanol into α,β- or β,β-difunctionalized ketones.
Collapse
Affiliation(s)
- Yoshiya Sekiguchi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.,Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| |
Collapse
|
206
|
Cohen Y, Marek I. Directed Regioselective Carbometallation of 1,2‐Dialkyl‐Substituted Cyclopropenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yair Cohen
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology, Technion City Haifa 3200009 Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology, Technion City Haifa 3200009 Israel
| |
Collapse
|
207
|
Abstract
An iron-catalyzed deconstruction/hydrogenation reaction of alcohols through C-C bond cleavage is developed through photocatalysis, to produce ketones or aldehydes as the products. Tertiary, secondary, and primary alcohols bearing a wide range of substituents are suitable substrates. Complex natural alcohols can also perform the transformation selectively. A investigation of the mechanism reveals a procedure that involves chlorine radical improved O-H homolysis, with the assistance of 2,4,6-collidine.
Collapse
Affiliation(s)
- Wei Liu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, People's Republic of China
| | - Qiang Wu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, People's Republic of China
| | - Miao Wang
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, People's Republic of China
| | - Yahao Huang
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, People's Republic of China
| | - Peng Hu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, People's Republic of China
| |
Collapse
|
208
|
Ren J, Du FH, Jia MC, Hu ZN, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021; 60:24171-24178. [PMID: 34523779 DOI: 10.1002/anie.202108589] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/03/2021] [Indexed: 11/08/2022]
Abstract
Herein, we report a new strategy for carbon-carbon bond scission and intramolecular ring expansion fluorination of unactivated cyclopropanes, which was accomplished with a new hypervalent fluoroiodane(III) reagent 1. This novel method delivers medicinally relevant 4-fully substituted fluoropiperidines in moderate to high yields with excellent regio- and diastereoselectivity. Reagent 1, which has an N-acetylbenziodazole framework, was readily synthesized via three steps in 76 % overall yield and was characterized by NMR spectroscopy and X-ray crystallography. Owing to the presence of a secondary I⋅⋅⋅O bonding interaction between the λ3 -iodane atom and the carbonyl oxygen of the acetyl group of the N-acetylbenziodazole framework, 1 has excellent stability and can be stored at ambient temperature for 6 months without any detectable decomposition. Density functional theory calculations and experimental studies showed that the reaction proceeds via a carbocation intermediate that readily combines with a fluoride ion to generate the product.
Collapse
Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Feng-Huan Du
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Meng-Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze-Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| |
Collapse
|
209
|
Ren J, Du F, Jia M, Hu Z, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Feng‐Huan Du
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Meng‐Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze‐Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| |
Collapse
|
210
|
Wei HZ, Wei Y, Shi M. Construction of an isoquinolinone framework from carboxylic-ester-directed umpolung ring opening of methylenecyclopropanes. Chem Commun (Camb) 2021; 57:11201-11204. [PMID: 34622891 DOI: 10.1039/d1cc04826k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An interesting type of reaction involving functionalized methylenecyclopropanes (MCPs) has been revealed. Here, a nucleophilic attack of an anionic species onto a partially polarity-reversed MCP was realized by treating a neighbouring carboxylic ester tethered to the MCP and amine with KHMDS to realize an umpolung ring opening of the MCP. This work established an operationally convenient protocol for the rapid construction of isoquinolinone frameworks.
Collapse
Affiliation(s)
- Hao-Zhao Wei
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China. .,State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Lu, Shanghai, 200032, China.
| |
Collapse
|
211
|
Taily IM, Saha D, Banerjee P. Arylcyclopropane yet in its infancy: the challenges and recent advances in its functionalization. Org Biomol Chem 2021; 19:8627-8645. [PMID: 34549770 DOI: 10.1039/d1ob01432c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Electronically unbiased arylcyclopropane functionalization has always been a challenge to organic chemists, and the emergence of donor-acceptor cyclopropanes (DACs) has not only vehemently overshadowed them but still dominates the cyclopropane chemistry. Unlike DACs, the absence of pre-installed functional groups makes it harder for them to activate and participate in a reaction. The field has witnessed considerably slow progress since its inception due to the inherent challenges. There are only a few strategies available to open arylcyclopropanes. Therefore, this work is still in its infancy stage in spite of these materials being one of the earliest known type of cyclopropanes. This review manifests the history, endeavors, and achievements alongside the associated challenges, opportunities, and the need for concerted efforts to accomplish the long-awaited golden age of arylcyclopropanes.
Collapse
Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology, Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| |
Collapse
|
212
|
Karimzadeh‐Younjali M, Wendt OF. α‐ and β‐Eliminations in Transition Metal Complexes: Strategies to Cleave Unstrained C−C and C−F Bonds. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Ola F. Wendt
- Centre for Analysis and Synthesis Department of Chemistry Lund University PO Box 124 SE-22100 Lund Sweden
| |
Collapse
|
213
|
Lorton C, Roblin A, Retailleau P, Voituriez A. Synthesis of Functionalized Cyclobutenes and Spirocycles
via
Asymmetric P(III)/P(V) Redox Catalysis. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100664] [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)
- Charlotte Lorton
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Antoine Roblin
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| | - Arnaud Voituriez
- Université Paris-Saclay CNRS Institut de Chimie des Substances Naturelles UPR 2301 91198 Gif-sur-Yvette France
| |
Collapse
|
214
|
Li R, Li B, Zhang H, Ju CW, Qin Y, Xue XS, Zhao D. A ring expansion strategy towards diverse azaheterocycles. Nat Chem 2021; 13:1006-1016. [PMID: 34282307 DOI: 10.1038/s41557-021-00746-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 06/01/2021] [Indexed: 02/08/2023]
Abstract
The development of innovative strategies for the synthesis of N-heterocyclic compounds is an important topic in organic synthesis. Ring expansion methods to form large N-heterocycles often involve the cycloaddition of strained aza rings with π bonds. However, in some cases such strategies suffer from some limitations owing to the difficulties in controlling the regioselectivity and the accessibility of specific π-bond synthons. Here, we report the development of a general ring expansion strategy that involves a formal cross-dimerization between three-membered aza heterocycles and three- and four-membered-ring ketones through synergistic bimetallic catalysis. These formal cross-dimerizations of two different strained rings are efficient and scalable, and provide a straightforward and broadly applicable means of assembling diverse N-heterocycles, such as 3-benzazepinones, dihydropyridinones and uracils, which are versatile units in numerous drugs and biologically active compounds. Preliminary mechanistic studies revealed that the C-C bond of strained ring ketones is first cleaved by the Pd0 species during the reaction.
Collapse
Affiliation(s)
- Ruirui Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Bo Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Hongpeng Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Cheng-Wei Ju
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Ying Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Xiao-Song Xue
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China.
| |
Collapse
|
215
|
Zhao B, Prabagar B, Shi Z. Modern strategies for C–H functionalization of heteroarenes with alternative coupling partners. Chem 2021. [DOI: 10.1016/j.chempr.2021.08.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
216
|
Lou C, Wang X, Lv L, Li Z. Iron-Catalyzed Ring-Opening Reactions of Cyclopropanols with Alkenes and TBHP: Synthesis of 5-Oxo Peroxides. Org Lett 2021; 23:7608-7612. [PMID: 34528812 DOI: 10.1021/acs.orglett.1c02824] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ring opening of cyclopropanols is rarely used in multicomponent reactions. Herein we report the three-component reaction of cyclopropanols with alkenes and tert-butyl hydroperoxide (TBHP) catalyzed by an iron catalyst. This protocol enables the incorporation of both the β-carbonyl fragment and a peroxy unit across the C═C double bond regioselectively, thus allowing an efficient, facile access to 5-oxo peroxides. Modification of the biologically active molecules and various downstream derivatizations of the peroxides are also demonstrated.
Collapse
Affiliation(s)
- Chenhao Lou
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Xin Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Leiyang Lv
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Zhiping Li
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| |
Collapse
|
217
|
Dai YM, Liu M, Zeng QQ, Li X, Wang BQ, Hu P, Zhao KQ, Song F, Shi ZJ. Skeleton Reorganization of Substituted Benzocyclobutenols through Rh-Catalyzed C-C Bond Cleavage Manipulated by Hydrogen Transfer. Org Lett 2021; 23:7597-7602. [PMID: 34533966 DOI: 10.1021/acs.orglett.1c02813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although transition-metal-catalyzed C-C bond activation has been investigated extensively, C-C bond cleavage manipulated by hydrogen transfer has been unexplored. In this work, we disclose a skeleton reorganization of alkene-tethered benzocyclobutenols through Rh-catalyzed C-C bond cleavage coupled with intra- and intermolecular hydrogen transfer. The reaction pathway was well-tuned by the catalytic systems. As a result, divergent benzofurans bearing 4-β-hydroxy or 4-β-keto moieties were synthesized under pH- and redox-neutral conditions.
Collapse
Affiliation(s)
- Ya-Mei Dai
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Min Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Qin-Qiong Zeng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Xiaoting Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Feijie Song
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, P. R. China
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| |
Collapse
|
218
|
Dealkenylative Ni-Catalyzed Cross-Coupling Enabled by Tetrazine and Photoexcitation. J Am Chem Soc 2021; 143:14046-14052. [PMID: 34437800 DOI: 10.1021/jacs.1c05092] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A new and general method to functionalize the C(sp3)-C(sp2) bond of alkyl and alkene linkages has been developed, leading to the dealkenylative generation of carbon-centered radicals that can be intercepted to undergo Ni-catalyzed C(sp3)-C(sp2) cross-coupling. This one-pot protocol leverages the easily procured alkene feedstocks for organic synthesis with excellent functional group compatibility without the need for a photoredox catalyst.
Collapse
|
219
|
Zhang R, Xia Y, Dong G. Intermolecular [5+2] Annulation between 1‐Indanones and Internal Alkynes by Rhodium‐Catalyzed C–C Activation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Rui Zhang
- Department of Chemistry The University of Chicago 5735 S Ellis Ave Chicago IL 60637 USA
| | - Ying Xia
- Department of Chemistry The University of Chicago 5735 S Ellis Ave Chicago IL 60637 USA
| | - Guangbin Dong
- Department of Chemistry The University of Chicago 5735 S Ellis Ave Chicago IL 60637 USA
| |
Collapse
|
220
|
Zhang R, Xia Y, Dong G. Intermolecular [5+2] Annulation between 1-Indanones and Internal Alkynes by Rhodium-Catalyzed C-C Activation. Angew Chem Int Ed Engl 2021; 60:20476-20482. [PMID: 34216095 PMCID: PMC8405584 DOI: 10.1002/anie.202106007] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/21/2021] [Indexed: 12/14/2022]
Abstract
Herein, we report a [5+2] cycloaddition between readily accessible 1-indanones and internal alkynes through Rh-catalyzed activation of less strained C-C bonds. The reaction is enabled by a strongly σ-donating NHC ligand and a carefully modified temporary directing group. A wide range of functional groups is tolerated, and the method provides straightforward access to diverse benzocycloheptenones that are hard to access otherwise. DFT studies of the reaction mechanism imply the migration insertion as the turnover-limiting step and suggest beneficial π-π interactions in the transition states.
Collapse
Affiliation(s)
- Rui Zhang
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, Illinois 60637
| | - Ying Xia
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, Illinois 60637
| | - Guangbin Dong
- Department of Chemistry, The University of Chicago, 5735 S Ellis Ave, Chicago, Illinois 60637
| |
Collapse
|
221
|
Mašek T, Jahn U. Enolate-Based Regioselective Anti-Beckmann C-C Bond Cleavage of Ketones. J Org Chem 2021; 86:11608-11632. [PMID: 34369794 DOI: 10.1021/acs.joc.1c01169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The Baeyer-Villiger or Beckmann rearrangements are established methods for the cleavage of ketone derivatives under acidic conditions, proceeding for unsymmetrical precursors selectively at the more substituted site. However, the fragmentation regioselectivity cannot be switched and fragmentation at the less-substituted terminus is so far not possible. We report here that the reaction of ketone enolates with commercial alkyl nitrites provides a direct and regioselective way of fragmenting ketones into esters and oximes or ω-hydroxyimino esters, respectively. A comprehensive study of the scope of this reaction with respect to ketone classes and alkyl nitrites is presented. Control over the site of cleavage is gained through regioselective enolate formation by various bases. Oxidation of kinetic enolates of unsymmetrical ketones leads to the otherwise unavailable "anti-Beckmann" cleavage at the less-substituted side chain, while cleavage of thermodynamic enolates of the same ketones represents an alternative to the Baeyer-Villiger oxidation or the Beckmann rearrangement under basic conditions. The method is suited for the transformation of natural products and enables access to orthogonally reactive dicarbonyl compounds.
Collapse
Affiliation(s)
- Tomáš Mašek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10 Prague 6, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10 Prague 6, Czech Republic
| |
Collapse
|
222
|
Takano H, Shibata T. Versatile Transformations of Biphenylenes by Transition-Metal Catalysts and Application for the Synthesis of Polycyclic Hydrocarbons. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hideaki Takano
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University
| |
Collapse
|
223
|
Cobalt-catalyzed atom-economical, diastereo- and enantioselective coupling of aldimines and cyclopropanols. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1062-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
224
|
Guo J, Liu Y, Lin X, Tang T, Wang B, Hu P, Zhao K, Song F, Shi Z. Site‐Selective C–C Cleavage of Benzocyclobutenones Enabled by a Blocking Strategy Using Nickel Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106709] [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)
- Jing‐Hong Guo
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Yu Liu
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Xin‐Cheng Lin
- Department of Chemistry Fudan University Shanghai 200433 China
| | - Tian‐Mu Tang
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Bi‐Qin Wang
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Ping Hu
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Ke‐Qing Zhao
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Feijie Song
- College of Chemistry and Materials Science Sichuan Normal University Chengdu Sichan 610066 China
| | - Zhang‐Jie Shi
- Department of Chemistry Fudan University Shanghai 200433 China
| |
Collapse
|
225
|
He T, Chen D, Qian S, Zheng Y, Huang S. Selective C-C Bond Cleavage of Cycloalkanones by NaNO 2/HCl. Org Lett 2021; 23:6525-6529. [PMID: 34378944 DOI: 10.1021/acs.orglett.1c02327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel selective fragmentation of cycloalkanones by NaNO2/HCl has been established. The C-C bond cleavage reaction proceeds smoothly under mild conditions, selectively affording versatile keto acids or oxime acids. The methodology can streamline the synthesis of valuable chiral molecules and isocoumarins from readily available feedstocks.
Collapse
Affiliation(s)
- Tianyu He
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Dengfeng Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Shencheng Qian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Yu Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Shenlin Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| |
Collapse
|
226
|
Poteat CM, Lindsay VNG. Stereospecific Synthesis of Enantioenriched Alkylidenecyclobutanones via Formal Vinylidene Insertion into Cyclopropanone Equivalents. Org Lett 2021; 23:6482-6487. [PMID: 34369797 DOI: 10.1021/acs.orglett.1c02303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
1-Sulfonylcyclopropanols are employed here as efficient cyclopropanone equivalents in a formal vinylidene insertion process, providing the first general synthetic route to enantioenriched alkylidenecyclobutanones. The addition of an alkenyl-Grignard reagent leads to an alkenylcyclopropanol capable of electrophilic activation by N-bromosuccinimide, triggering a regio- and stereospecific 1,2-migration and affording alkylidenecyclobutanones after elimination. Activation of the intermediate with other electrophiles such as HCl or mCPBA leads to the formation of various chiral cyclobutanones and γ-lactones via alternative pathways.
Collapse
Affiliation(s)
- Christopher M Poteat
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Vincent N G Lindsay
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| |
Collapse
|
227
|
Abstract
The Pd-catalyzed carbon-carbon bond formation pioneered by Heck in 1969 has dominated medicinal chemistry development for the ensuing fifty years. As the demand for more complex three-dimensional active pharmaceuticals continues to increase, preparative enzyme-mediated assembly, by virtue of its exquisite selectivity and sustainable nature, is poised to provide a practical and affordable alternative for accessing such compounds. In this minireview, we summarize recent state-of-the-art developments in practical enzyme-mediated assembly of carbocycles. When appropriate, background information on the enzymatic transformation is provided and challenges and/or limitations are also highlighted.
Collapse
Affiliation(s)
- Weijin Wang
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL, 33458, USA
| | - Douglass F Taber
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL, 33458, USA
| | - Hans Renata
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| |
Collapse
|
228
|
Chen J, Shi Z, Li C, Lu P. Catalytic enantioselective synthesis of benzocyclobutenols and cyclobutanols via a sequential reduction/C-H functionalization. Chem Sci 2021; 12:10598-10604. [PMID: 34447553 PMCID: PMC8356817 DOI: 10.1039/d1sc02119b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/02/2021] [Indexed: 11/21/2022] Open
Abstract
We report here a sequential enantioselective reduction/C-H functionalization to install contiguous stereogenic carbon centers of benzocyclobutenols and cyclobutanols. This strategy features a practical enantioselective reduction of a ketone and a diastereospecific iridium-catalyzed C-H silylation. Further transformations have been explored, including controllable regioselective ring-opening reactions. In addition, this strategy has been utilized for the synthesis of three natural products, phyllostoxin (proposed structure), grandisol and fragranol.
Collapse
Affiliation(s)
- Jun Chen
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Zhan Shi
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Chunyu Li
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Ping Lu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| |
Collapse
|
229
|
Liu Z, Wu S, Chen Y. Selective C(sp 3)-C(sp 3) Cleavage/Alkynylation of Cycloalkylamides Enables Aminoalkyne Synthesis with Hypervalent Iodine Reagents. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02981] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhengyi Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Centre of 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
| | - Shuang Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Centre of 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
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
| | - Yiyun Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Centre of 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
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| |
Collapse
|
230
|
Liu J, Yang Z, Jiang J, Zeng Q, Zheng L, Liu ZQ. Rhodium(III)-Catalyzed Oxidative Cyclization of Oxazolines with Cyclopropanols: Synthesis of Isoindolinones. Org Lett 2021; 23:5927-5931. [PMID: 34236196 DOI: 10.1021/acs.orglett.1c02031] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The synthesis of C3-substituted isoindolin-1-ones from oxazolines and cyclopropanols has been achieved with oxazoline as a bifunctional nucleophilic directing group. The reaction proceeds by the cleavage of three chemical bonds and allows the formation of three new chemical bonds, a C-N bond, a C-C bond, and a C-O bond, in a single step.
Collapse
Affiliation(s)
- Jidan Liu
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| | - Zhenke Yang
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| | - Jinyuan Jiang
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| | - Qiaohai Zeng
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| | - Liyao Zheng
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| | - Zhao-Qing Liu
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, P. R. China
| |
Collapse
|
231
|
Zhou X, Xu Y, Dong G. Deacylation-aided C–H alkylative annulation through C–C cleavage of unstrained ketones. Nat Catal 2021; 4:703-710. [DOI: 10.1038/s41929-021-00661-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
232
|
Song Y, Fu C, Ma S. Copper-Catalyzed Syntheses of Multiple Functionalizatized Allenes via Three-Component Reaction of Enynes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02140] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yulong Song
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
| |
Collapse
|
233
|
Pan T, Gao X, Yang S, Wang L, Hu Y, Liu M, Wang W, Wu Y, Zheng B, Guo H. Palladium-Catalyzed (3+3) Annulation of Allenylethylene Carbonates with Nitrile Oxides. Org Lett 2021; 23:5750-5754. [PMID: 34286988 DOI: 10.1021/acs.orglett.1c01921] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this paper, we designed and synthesized a new type of cyclic carbonates, allenylethylene carbonates (AECs). With AECs as reactive precursors, we developed palladium-catalyzed (3+3) annulation of AECs with nitrile oxides. Various AECs worked well in this reaction under mild reaction conditions. A variety of 5,6-dihydro-1,4,2-dioxazine derivatives with allenyl quaternary stereocenters can be accessed in a facile manner in high yields (≤98%).
Collapse
Affiliation(s)
- Ting Pan
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Xing Gao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Sen Yang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Lan Wang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Yimin Hu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Min Liu
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Bing Zheng
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, P. R. China.,Department of Nutrition and Health, China Agricultural University, Beijing 100193, P. R. China
| |
Collapse
|
234
|
Guo JH, Liu Y, Lin XC, Tang TM, Wang BQ, Hu P, Zhao KQ, Song F, Shi ZJ. Site-Selective C-C Cleavage of Benzocyclobutenones Enabled by a Blocking Strategy Using Nickel Catalysis. Angew Chem Int Ed Engl 2021; 60:19079-19084. [PMID: 34187100 DOI: 10.1002/anie.202106709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Indexed: 12/29/2022]
Abstract
Controlling the chemo- and regioselectivity of transition-metal-catalyzed C-C activation remains a great challenge. The transformations of benzocyclobutenones (BCBs) usually involve the cleavage of C1-C2 bond. In this work, an unprecedented highly selective cleavage of C1-C8 bond with the insertion of alkynes is achieved by using blocking strategy via Ni catalysis, providing an efficient method for synthesis of 1,8-disubstituted naphthalenes. Notably, the blocking group could be readily removed after the transformation.
Collapse
Affiliation(s)
- Jing-Hong Guo
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Yu Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Xin-Cheng Lin
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Tian-Mu Tang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Feijie Song
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichan, 610066, China
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| |
Collapse
|
235
|
Wu J, Shen Q. Difluoromethylthiolator: A Toolbox of Reagents for Difluoromethylthiolation. Acc Chem Res 2021; 54:2946-2958. [PMID: 34184872 DOI: 10.1021/acs.accounts.1c00252] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recently, the strategic installation of a fluorine atom or a fluoroalkyl group site-selectively at the specific position of the target molecule has become a routine approach and daily practice for medicinal chemists in their endeavor to fine tune the structure of the lead compound to improve its physicochemical properties such as the cell membrane permeability and metabolic stability. Among many fluoroalkyl groups, the difluoromethylthio group (-SCF2H) has attracted recent intense attention. Largely due to the weak acidity of the proton in the difluoromethylthio group, the difluoromethylthio group is generally considered to be a lipophilic hydrogen-bonding donor and a bioisostere of the hydroxy/thio group that might interact with the heteroatom of the enzyme via a hydrogen bond to improve the binding selectivity of the drug molecule. Besides, the difluoromethylthio group is less lipophilic, less electron-withdrawing, and less stable to the acidic or basic environment than its analogue trifluoromethylthio group (-SCF3), making it easier to regulate the metabolic stability of drug molecules. These beneficial effects render the difluoromethylthio group one of the most favorable functional groups in drug design; consequently, there is an urgent need to develop new strategies for the efficient introduction of the difluoromethylthio group into small molecules under mild conditions. Over the last few decades, several different approaches to the preparation of difluoromethylthiolated compounds have been developed, including the difluoromethylation of thiolated substrates with an electrophilic/nucleophilic difluoromethylating reagent or the insertion of a difluoromethyl carbene into the S-H bond of the thiols. In contrast, we adopt an alternative approach to the preparation of difluoromethylthiolated compounds by late-stage direct difluoromethylthiolation of the specific substrates with a difluoromethylthiolating reagent. With this aim in mind, in the last 6 years we have successfully developed a toolbox of reagents that are capable of the direct introduction of the difluoromethylthio group into the target molecules, including nucleophilic difluoromethylthiolating reagent [(SIPr)AgSCF2H] I, electrophilic difluoromethylthiolating reagent PhthSCF2H II, three optically pure difluoromethylthiolating reagents camphorsultam-SCF2H III, radical difluoromethylthiolating reagent PhSO2SCF2H IV, and reagent PhSO2SCFClH V that could be used for the preparation of 18F-labeled [18F]ArSCF2H. These reagents reacted with a broad range of substrates to get access to difluoromethylthiolated compounds efficiently, thus providing medicinal chemists a powerful weapon for the direct introduction of the difluoromethylthio group into promising molecules during the search for new drugs.
Collapse
Affiliation(s)
- Jiang Wu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| |
Collapse
|
236
|
Affiliation(s)
- José‐Antonio García‐López
- Grupo de Química Organometálica Departamento de Química Inorgánica Facultad de Química Universidad de Murcia 30100 Murcia Spain
| | - Isabel Saura‐Llamas
- Grupo de Química Organometálica Departamento de Química Inorgánica Facultad de Química Universidad de Murcia 30100 Murcia Spain
| |
Collapse
|
237
|
Wang Y, Qiu B, Hu L, Lu G, Xu T. Rh-Catalyzed Cascade C–C/C olefin–H Activations and Mechanistic Insight. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02480] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuxi Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
| | - Bo Qiu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
| | - Lingfei Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Tao Xu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
| |
Collapse
|
238
|
Liu L, Cheng F, Meng C, Zhang AA, Zhang M, Xu K, Ishida N, Murakami M. Pd-Catalyzed Ring-Closing/Ring-Opening Cross Coupling Reactions: Enantioselective Diarylation of Unactivated Olefins. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02277] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Lantao Liu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Fangyuan Cheng
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Chenxiang Meng
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - An-An Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Mingliang Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Kai Xu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Naoki Ishida
- 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
| |
Collapse
|
239
|
Deng C, Li C, Yao J, Jin Q, Miao M, Zhou H. Rh(III)‐Catalyzed [4+2] Cyclization of 2‐Aryl‐1
H
‐benzo[
d
]imidazoles with Maleimides via C‐H Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chen Deng
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou Zhejiang 310018 P. R. China
| | - Changchang Li
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Jinzhong Yao
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Quanli Jin
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Maozhong Miao
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou Zhejiang 310018 P. R. China
| | - Hongwei Zhou
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| |
Collapse
|
240
|
Zhao B, Rogge T, Ackermann L, Shi Z. Metal-catalysed C-Het (F, O, S, N) and C-C bond arylation. Chem Soc Rev 2021; 50:8903-8953. [PMID: 34190223 DOI: 10.1039/c9cs00571d] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The formation of C-aryl bonds has been the focus of intensive research over the last decades for the construction of complex molecules from simple, readily available feedstocks. Traditionally, these strategies involve the coupling of organohalides (I, Br, Cl) with organometallic reagents (Mg, Zn, B, Si, Sn,…) such as Kumada-Corriu, Negishi, Suzuki-Miyaura, Hiyama and Sonogashira cross-couplings. More recently, alternative methods have provided access to these products by reactions with less reactive C-Het (F, O, S, N) and C-C bonds. Compared to traditional methods, the direct cleavage and arylation of these chemical bonds, the essential link in accessible feedstocks, has become increasingly important from the viewpoint of step-economy and functional-group compatibility. This comprehensive review aims to outline the development and advances of this topic, which was organized into (1) C-F bond arylation, (2) C-O bond arylation, (3) C-S bond arylation, (4) C-N bond arylation, and (5) C-C bond arylation. Substantial attention has been paid to the strategies and mechanistic investigations. We hope that this review can trigger chemists to discover more efficient methodologies to access arylation products by cleavage of these C-Het and C-C bonds.
Collapse
Affiliation(s)
- Binlin Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | | | | | | |
Collapse
|
241
|
Dong C, Huang L, Guan Z, Huang C, He Y. Visible‐Light‐Mediated Aerobic Oxidative C(
sp
3
)−C(
sp
3
) Bond Cleavage of Morpholine Derivatives Using 4CzIPN as a Photocatalyst. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chun‐Lin Dong
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Lan‐Qian Huang
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Chu‐Sheng Huang
- Guangxi Teachers Education University Nanning 530001 People's Republic of China
| | - Yan‐Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| |
Collapse
|
242
|
Long PW, Oestreich M. B(C 6F 5) 3-Catalyzed Diastereoselective Formal (4 + 1)-Cycloaddition of Vinylcyclopropanes and Et 2SiH 2. Org Lett 2021; 23:4834-4837. [PMID: 34076451 DOI: 10.1021/acs.orglett.1c01565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A formal (4 + 1)-cycloaddition of vinylcyclopropanes and Et2SiH2 to afford 3,4-disubstituted silolanes is reported. The reaction sequence commences with the known B(C6F5)3-catalyzed alkene hydrosilylation with dihydrosilanes. Cleavage of the remaining Si-H bond in the hydrosilylation product assisted by B(C6F5)3 leads to formation of a cyclopropane-stabilized silylium ion. The activated cyclopropane ring is then opened by the in situ-generated borohydride accompanied by ring closure to the silolane. The diastereoselectivity is rationalized by a mechanistic model.
Collapse
Affiliation(s)
- Peng-Wei Long
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| |
Collapse
|
243
|
Wang S, Miao E, Wang H, Song B, Huang W, Yang W. Rh-Catalyzed cascade C-H activation/C-C cleavage/cyclization of carboxylic acids with cyclopropanols. Chem Commun (Camb) 2021; 57:5929-5932. [PMID: 34013935 DOI: 10.1039/d1cc01778k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Merging both C-H and C-C activation in a tandem process is a marked challenge. A novel Rh(iii)-catalyzed C-H activation/ring opening C-C cleavage/cyclization of carboxylic acids with cyclopropanols was developed for the synthesis of 3-substituted phthalides and α,β-butenolides. This reaction displays excellent functional group tolerance with respect to both carboxylic acids and cyclopropanols and features relatively mild conditions. Remarkably, the utility of this method was highlighted by the rapid construction of bioactive compounds bearing a 3-substituted phthalide framework via late-stage functionalization.
Collapse
Affiliation(s)
- Siqi Wang
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Erfei Miao
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Hao Wang
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Bichao Song
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Wei Huang
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China and School of Pharmaceutical Science and Technology, Hangzhou Institute of Advanced Study, Hangzhou 310024, China
| | - Weibo Yang
- CAS Key Laboratory of Receptor Research, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Pudong, Shanghai 201203, China. and University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China and School of Pharmaceutical Science and Technology, Hangzhou Institute of Advanced Study, Hangzhou 310024, China
| |
Collapse
|
244
|
Xue Y, Dong G. Total Synthesis of Penicibilaenes via C-C Activation-Enabled Skeleton Deconstruction and Desaturation Relay-Mediated C-H Functionalization. J Am Chem Soc 2021; 143:8272-8277. [PMID: 34038107 DOI: 10.1021/jacs.1c04335] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, we describe the first total synthesis of sesquiterpene penicibilaenes A and B through a "C-C/C-H" approach. In the "C-C" stage, the Rh-catalyzed "cut-and-sew" transformation between trisubstituted alkene and cyclobutanone has been employed to construct the unique tricyclo[6.3.1.01,5]dodecane skeleton and the all-carbon quaternary center. Critical linker and Lewis acid effects have been identified for the C-C activation process. In the "C-H" stage, a desaturation relay-based strategy involving consecutive ketone α,β-dehydrogenation and β-functionalization has been adopted to introduce the 1,3,5-triad stereocenters to the core. The synthesis of penicibilaenes A and B has been completed in 13 and 14 steps, respectively, in the longest linear sequence.
Collapse
Affiliation(s)
- Yibin Xue
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| |
Collapse
|
245
|
Majhi PK, Zimmer M, Morgenstern B, Scheschkewitz D. Transition-Metal Complexes of Heavier Cyclopropenes: Non-Dewar–Chatt–Duncanson Coordination and Facile Si═Ge Functionalization. J Am Chem Soc 2021; 143:8981-8986. [DOI: 10.1021/jacs.1c04419] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Paresh Kumar Majhi
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Michael Zimmer
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Bernd Morgenstern
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - David Scheschkewitz
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany
| |
Collapse
|
246
|
Barday M, Bouillac P, Coquerel Y, Amatore M, Constantieux T, Rodriguez J. Enantioselective Organocatalytic Syntheses and Ring‐Expansions of Cyclobutane Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Manuel Barday
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Pierre Bouillac
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Yoann Coquerel
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Muriel Amatore
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | | | - Jean Rodriguez
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| |
Collapse
|
247
|
Wang X, Wang H, Xu X, Zhao D. Ring Expansion to 8‐Membered Silacycles through Formal Cross‐Dimerization of 5‐Membered Palladacycles with Silacyclobutanes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100535] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xi–Chao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Hao‐Ran Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Xiufang Xu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| |
Collapse
|
248
|
Nie W, Shen S, Ma C. Rhodium-Catalyzed Dehydrogenative Cycloisomerization of Dienylcyclopropane to Highly Substituted Toluene. Org Lett 2021; 23:4337-4341. [PMID: 34029111 DOI: 10.1021/acs.orglett.1c01265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A rhodium-catalyzed dehydrogenative cycloisomerization of dienylcyclopropane compounds is reported, which provides a straightforward approach to a variety of highly substituted toluene derivatives in 67-85% yields. The dienylcyclopropane-imides are produced by a single-step formal three-component olefination procedure. Preliminary mechanistic studies indicated that an electron-withdrawing group as R plays a critical role in completing this transformation.
Collapse
Affiliation(s)
- Wo Nie
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Shichao Shen
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| |
Collapse
|
249
|
Zhang Z, Ren J, Zhang M, Xu X, Wang X. Divergent Synthesis of
N
‐Heterocycles
by Merging Borane‐Mediated Cyclopropane
Ring‐Opening
and Hydride Abstraction. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Zi‐Yu Zhang
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Jie Ren
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Ming Zhang
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xiu‐Fang Xu
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xiao‐Chen Wang
- State Key Laboratory and Institute of Elemento‐Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| |
Collapse
|
250
|
Chen X, Li L, Yang W, Song K, Wu B, Gan W, Cao J, Xu L. Palladium‐Catalyzed
C—C Bond Activation/Suzuki Reaction of Methylenecyclobutanes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiao‐Bing Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Li Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Wan‐Chun Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Kun‐Long Song
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Bin Wu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Wan‐Er Gan
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
| | - Li‐Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou Zhejiang 311121 China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute and Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou Gansu 730000 China
| |
Collapse
|