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Song T, Wu Y, Ren J, Wang Z. Formal Syntheses of (-)-Quinocarcinamide and (-)-Quinocarcin. Org Lett 2024. [PMID: 39145720 DOI: 10.1021/acs.orglett.4c02267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
Concise and scalable formal syntheses of (-)-quinocarcinamide and (-)-quinocarcin have been achieved in 9 steps with 9% overall yield from simple commercially available chemicals. The synthetic strategy features an ortho-regioselective Pictet-Spengler cyclization for the construction of the tetrahydroisoquinoline skeleton, a stereoselective formal intramolecular [3 + 2] cross cycloaddition of cyclopropane 1,1-diester with an imine for the construction of the 3,8-diazabicyclo[3.2.1]octane skeleton.
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Affiliation(s)
- Tianhang Song
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Yifan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Jun Ren
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
| | - Zhongwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, China
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2
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Li Y, Feng J, Huang F, Baell JB. Synthesis of 3-Azabicyclo[3.1.0]hexane Derivates. Chemistry 2023; 29:e202301017. [PMID: 37269044 DOI: 10.1002/chem.202301017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/28/2023] [Accepted: 06/02/2023] [Indexed: 06/04/2023]
Abstract
3-Azabicyclo[3.1.0]hexanes are an important class of nitrogen-containing heterocycles that have been found to be key structural features in a wide range of biologically active natural products, drugs, and agrochemicals. As a cutting-edge area, the synthesis of these derivatives has made spectacular progress in recent decades, with various transition-metal-catalyzed and transition-metal-free catalytic systems being developed. In this review, we provide an overview of recent advances in the efficient methods for the synthesis of 3-azabicyclo[3.1.0]hexane derivatives since 2010, emphasizing the scope of substrates and synthesis' applications, as well as the mechanisms of these reactions.
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Affiliation(s)
- Yufeng Li
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, No.1 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Jiajun Feng
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Fei Huang
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, No.1 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Jonathan B Baell
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
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3
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Quevedo-Acosta Y, Jurberg ID, Gamba-Sánchez D. Cyclization Strategies Using Imide Derivatives for the Synthesis of Polycyclic Nitrogen‐Containing Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200432] [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)
| | - Igor D. Jurberg
- Universidade Estadual de Campinas Institute of Chemistry 13083 BRAZIL
| | - Diego Gamba-Sánchez
- Universidad de Los Andes Chemistry Department Cra 1 No. 18A-12 Q:305 111711 Bogota COLOMBIA
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4
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Zhu J, Zhang C, Liu L, Xue C, Cai Y, Liu XY, Xue F, Qin Y. Total Synthesis of Sarpagine Alkaloid (-)-Normacusine B. Org Lett 2022; 24:3515-3520. [PMID: 35544733 DOI: 10.1021/acs.orglett.2c01177] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An asymmetric total synthesis of the sarpagine alkaloid (-)-normacusine B is presented. Salient features of this synthesis include a photocatalytic nitrogen-centered radical cascade reaction to assemble the tetrahydrocarbolinone skeleton, a titanium-mediated intramolecular amide-alkene coupling to construct the bridged azabicyclo[3.3.1]nonane moiety, and a nickel-catalyzed reductive Heck coupling to assemble the azabicyclo[2.2.2]octane ring system.
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Affiliation(s)
- Jianquan Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chao Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Luyi Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chaoyun Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yukun Cai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Fei Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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5
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Pastrana Restrepo M, Galeano Jaramillo E, Martínez Martínez A, Robledo Restrepo S. Synthesis and trypanocide activity of chloro-l-tyrosine and bromo-l-tyrosine derivatives. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2249-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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6
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Zheng Y, Yu X, Lv S, Mykhailiuk PK, Ma Q, Hai L, Wu Y. Synthesis of CHF2-substituted 3-azabicyclo[3.1.0]hexanes by photochemical decomposition of CHF2-pyrazolines. RSC Adv 2018; 8:5114-5118. [PMID: 35558341 PMCID: PMC9092616 DOI: 10.1039/c7ra13141k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/23/2018] [Indexed: 12/28/2022] Open
Abstract
A practical synthesis of CHF2-substituted 3-azabicyclo[3.1.0]hexanes was developed for the first time. The key step was photochemical decomposition of CHF2-substituted pyrazolines. This protocol has the advantages of simple operation, and mild conditions, as well as excellent functional group tolerance, giving the desired products in moderate to excellent yields. A general and efficient method has been developed to synthesize CHF2-substituted 3-azabicyclo[3.1.0]hexane derivatives via photochemical decomposition of CHF2-pyrazolines.![]()
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Affiliation(s)
- Yang Zheng
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xinling Yu
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Songyang Lv
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Pavel K. Mykhailiuk
- Enamine Ltd
- 01103 Kyiv
- Ukraine
- Taras Shevchenko National University of Kyiv Chemistry Department
- 01601 Kyiv
| | - Qiang Ma
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Li Hai
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Yong Wu
- Key Laboratory of Drug-Targeting of Education Ministry
- Department of Medicinal Chemistry
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
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7
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Jia P, Zhang Q, Zhuge Y, Liwei X, Huang Y. One-Pot Synthesis of Cyclopropanes from Methylene Azabicyclo[3.1.0]hexanes Obtained by Formal Sequential [1+2]- and [2+3]-Cycloaddition Reaction of Prop-2-ynylsulfonium Salts and Tosylaminomethyl Enones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700959] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Penghao Jia
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China, Fax: (+86)-22-2350-3159
| | - Qinglong Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China, Fax: (+86)-22-2350-3159
| | - Yuzhou Zhuge
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China, Fax: (+86)-22-2350-3159
| | - Xingyue Liwei
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China, Fax: (+86)-22-2350-3159
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China, Fax: (+86)-22-2350-3159
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin People's Republic of China
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8
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Teng HL, Luo Y, Nishiura M, Hou Z. Diastereodivergent Asymmetric Carboamination/Annulation of Cyclopropenes with Aminoalkenes by Chiral Lanthanum Catalysts. J Am Chem Soc 2017; 139:16506-16509. [DOI: 10.1021/jacs.7b10786] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Huai-Long Teng
- Advanced
Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yong Luo
- Organometallic
Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Masayoshi Nishiura
- Advanced
Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Organometallic
Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Advanced
Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Organometallic
Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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9
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Scherer M, Gademann K. Total Synthesis and Structural Revision of Aeruginosin KT608A. Org Lett 2017; 19:3915-3918. [DOI: 10.1021/acs.orglett.7b01822] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel Scherer
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
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10
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Wu K, Meng L, Huai M, Huang Z, Liu C, Qi X, Lei A. Palladium-catalyzed aerobic (1+2) annulation of Csp 3-H bonds with olefin for the synthesis of 3-azabicyclo[3.1.0]hex-2-ene. Chem Commun (Camb) 2017; 53:2294-2297. [PMID: 28164179 DOI: 10.1039/c6cc09332a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel palladium-catalyzed aerobic (1+2) annulation was developed for the synthesis of 3-azabicyclo[3.1.0]hex-2-ene. The palladation of Csp3-H bonds took place twice at the same position in the whole reaction process. Preliminary mechanistic studies by in situ IR revealed that the second C-H palladation and reductive elimination might be slow steps.
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Affiliation(s)
- Kun Wu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China.
| | - Lingkui Meng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China.
| | - Mingming Huai
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China.
| | - Zhiliang Huang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China.
| | - Chao Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China.
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People's Republic of China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China. and National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
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11
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Gee YS, Goertz NJM, Gardiner MG, Hyland CJT. Oxidative ring-opening of ferrocenylcyclopropylamines to N-ferrocenylmethyl β-hydroxyamides. Org Biomol Chem 2016; 14:2498-503. [PMID: 26814982 DOI: 10.1039/c5ob02577j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The in situ reduction of ferrocenyl cyclopropylimines to the corresponding amines triggers a facile oxidative ring-opening to yield the formal four-electron oxidation products: N-ferrocenylmethyl β-hydroxyamides. This process is believed to proceed via generation of a ferrocinium ion in the presence of air, leading to facile formation of a distonic radical cation that is ultimately trapped by oxygen.
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Affiliation(s)
- Yi Sing Gee
- School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Neils J M Goertz
- School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Michael G Gardiner
- School of Physical Sciences - Chemistry, University of Tasmania, Hobart, TAS 7001, Australia
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12
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Toh KK, Biswas A, Wang YF, Tan YY, Chiba S. Copper-mediated oxidative transformation of N-allyl enamine carboxylates toward synthesis of azaheterocycles. J Am Chem Soc 2014; 136:6011-20. [PMID: 24730391 DOI: 10.1021/ja500382c] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method for synthesis of 3-azabicyclo[3.1.0]hex-2-enes has been developed by intramolecular cyclopropanation of readily available N-allyl enamine carboxylates. Two complementary reaction conditions, CuBr-mediated aerobic and CuBr2-catalyzed-PhIO2-mediated systems effectively induced stepwise cyclopropanation via carbocupration of alkenes. Oxidative cyclopropane ring-opening of 5-substituted 3-azabicyclo[3.1.0]hex-2-enes was also developed for synthesis of highly substituted pyridines. In addition, diastereoselective reduction of 3-azabicyclo[3.1.0]hex-2-enes to 3-azabicyclo[3.1.0]hexanes was achieved using NaBH3CN in the presence of acetic acid.
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Affiliation(s)
- Kah Kah Toh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
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13
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de Carné-Carnavalet B, Archambeau A, Meyer C, Cossy J, Folléas B, Brayer JL, Demoute JP. Efficient Synthesis of Substituted 3-Azabicyclo[3.1.0]hexan-2-ones from 2-Iodocyclopropanecarboxamides Using a Copper-Free Sonogashira Coupling. Chemistry 2012. [DOI: 10.1002/chem.201203153] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Kamimura A, Takeuchi R, Ikeda K, Moriyama T, Sumimoto M. Stereoselective Synthesis of 1-Nitrobicyclo[3.1.0]hexanes and Fused Isoxazoline-N-oxides from Primary Nitro Compounds. J Org Chem 2012; 77:2236-45. [DOI: 10.1021/jo202489v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akio Kamimura
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Ryota Takeuchi
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Kosuke Ikeda
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takaaki Moriyama
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Michinori Sumimoto
- Department of Material Chemistry,
Graduate School of Science and Engineering, Yamaguchi University, Ube 755-8611, Japan
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15
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Toh KK, Wang YF, Ng EPJ, Chiba S. Copper-mediated aerobic synthesis of 3-azabicyclo[3.1.0]hex-2-enes and 4-carbonylpyrroles from N-allyl/propargyl enamine carboxylates. J Am Chem Soc 2011; 133:13942-5. [PMID: 21823614 DOI: 10.1021/ja206580j] [Citation(s) in RCA: 185] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthetic methods for 3-azabicyclo[3.1.0]hex-2-enes and 4-carbonylpyrroles have been developed that use copper-mediated/catalyzed reactions of N-allyl/propargyl enamine carboxylates under an O(2) atmosphere and involve intramolecular cyclopropanation and carbooxygenation, respectively. These methodologies take advantage of orthogonal modes of chemical reactivity of readily available N-allyl/propargyl enamine carboxylates; the complementary pathways can be accessed by slight modification of the reaction conditions.
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Affiliation(s)
- Kah Kah Toh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
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16
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Lee J, Berritt S, Prier CK, Joullié MM. Facile ring-opening of azabicyclic [3.1.0]- and [4.1.0]aminocyclopropanes to afford 3-piperidinone and 3-azepinone. Org Lett 2011; 13:1083-5. [PMID: 21271686 DOI: 10.1021/ol103105q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Azabicyclic [3.1.0] and [4.1.0] Kulinkovich products underwent a facile reduction/fragmentation to afford a variety of 3-piperidinones and 3-azepinones, respectively, in the presence of catalytic palladium on carbon and formic acid in an atmosphere of hydrogen.
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Affiliation(s)
- Jisun Lee
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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17
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Synthetic transformations mediated by the combination of titanium(IV) alkoxides and grignard reagents: selectivity issues and recent applications. Part 1: reactions of carbonyl derivatives and nitriles. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.10.050] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Kamimura A, Kadowaki A, Yoshida T, Takeuchi R, Uno H. Stereoselective Synthesis of Bicyclic Nitrocyclopropanes by a Radical-Anion Domino Reaction. Chemistry 2009; 15:10330-4. [DOI: 10.1002/chem.200901920] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Diastereoselective Ti-mediated preparation of bicyclic aminocyclopropanes from N-alkenyl amides. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Jerome L, Sheppard TD, Aliev AE, Motherwell WB. Intramolecular amidocyclopropanation reactions using diethoxymethyl-functionalised lactams as organozinc carbenoid precursors. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Faler CA, Joullié MM. Substituted azabicyclo[3.1.0]hexan-1-ols from aspartic and glutamic acid derivatives via titanium-mediated cyclopropanation. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.08.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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23
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Santra S, Masalov N, Epstein OL, Cha JK. Diastereoselective, titanium-mediated cyclization of omega-vinyl tethered imides. Org Lett 2005; 7:5901-4. [PMID: 16354095 DOI: 10.1021/ol0525157] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Diastereoselective reductive coupling reactions of omega-vinyl tethered cyclic imides are achieved by a preexisting stereocenter at an allylic position. Particularly noteworthy is the effective use of a 1:2 mixture of Ti(O-i-Pr)4 and n-BuLi to afford the N-acylhemiaminal products in good yields.
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Affiliation(s)
- Soumava Santra
- Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit, Michigan 48202, USA
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24
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Larquetoux L, Ouhamou N, Chiaroni A, Six Y. The Intramolecular Aromatic Electrophilic Substitution of Aminocyclopropanes Prepared by the Kulinkovich-de Meijere Reaction. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500428] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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26
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27
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Regio- and stereochemistry of inter- and intramolecular titanium-mediated coupling of imides and mono-substituted olefins. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01442-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Suero R, Gorgojo JM, Aurrecoechea JM. Synthesis of 3-aminopyrrolidines by cyclization of neutral C-centered α-aminoalkyl radicals. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00621-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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