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Montagnon C, Bultel JR, Besnard C, Guénée L, Lacour J. Polycyclic Pyrazolidines by Tandem Diazomalonate Dipolar Cycloadditions and CpRu-Catalyzed Carbene Additions. Chemistry 2024:e202401522. [PMID: 38726887 DOI: 10.1002/chem.202401522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Indexed: 07/12/2024]
Abstract
Thanks to the ability of diazo derivatives to react either as 1,3-dipoles and as carbenes after dinitrogen extrusion, combinations of oxa or aza benzonorbornadienes and diazomalonates afford polycyclic pyrazolidines via a three-step sequence of (i) a highly diastereoselective [3+2]-cycloaddition, (ii) a CpRu-catalyzed carbene addition, and (iii) a second dipolar cycloaddition. Of importance, step (II) represents a unique access to novel bench-stable N,N-cyclic azomethine imines, which behave as effective 1,3-dipoles in combination with electron-poor dipolarophiles. Each step proceeds efficiently and the 3-step process can be performed in one-pot to yield a polycyclic pyrazolidine in excellent overall yield (90 %).
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Affiliation(s)
- Claire Montagnon
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211, Geneva 4, Switzerland
| | - Joël R Bultel
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211, Geneva 4, Switzerland
| | - Céline Besnard
- Laboratoire de Cristallographie, University of Geneva, Quai Ernest Ansermet 24, 1211, Geneva 4, Switzerland
| | - Laure Guénée
- Laboratoire de Cristallographie, University of Geneva, Quai Ernest Ansermet 24, 1211, Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211, Geneva 4, Switzerland
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2
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Chandrasekharan SP, Dhami A, Mohanan K. Ag-Catalyzed Annulation of o-Alkynylaryl Aldehydes, Amines, and Diazo Compounds: Construction of Trifluoromethyl- and Cyano-Functionalized Benzo[ d]azepines. Org Lett 2023; 25:5806-5811. [PMID: 37530707 DOI: 10.1021/acs.orglett.3c02053] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
A Ag-catalyzed three-component annulation protocol, which uses o-alkynylaryl aldehydes, amines, and trifluorodiazoethane or diazoacetonitrile, to forge a new class of trifluoromethyl- and cyano-functionalized benzo[d]azepine is presented in this Letter. The key transformations involved in this reaction are the transient formation of the isoquinolinium intermediate and the subsequent ring-expansive addition of in situ-formed silver trifluorodiazoethylide to this intermediate. The practicality of this protocol is illustrated by realizing access to a wide range of densely functionalized benzo[d]azepines.
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Affiliation(s)
- Sanoop P Chandrasekharan
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Anamika Dhami
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Kishor Mohanan
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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3
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Li W, Li H, Qiu J, Wang Z, Li X, Pan YM, Hou C, Li H. Synthesis of 2-Pyrazolines with a CF 3- and Alkyne-Substituted Quaternary Carbon Center via [3 + 2] Cycloaddition of β-CF 3-1,3-enynes and Diazoacetates. J Org Chem 2022; 87:12477-12481. [PMID: 36070608 DOI: 10.1021/acs.joc.2c01428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Given the importance of both the CF3 group and the alkyne moiety in synthetic/medicinal chemistry, we report here the first example of efficient synthesis of 2-pyrazolines with a CF3- and alkyne-substituted quaternary carbon center. This methodology has the advantages of high functional group compatibility, the avoidance of base and open-flask conditions, easily available and easy to handle reagent, and broad substrate scope. Notably, this protocol allows for the late-stage functionalization of biologically active molecules and the gram-scale synthesis.
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Affiliation(s)
- Wei Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hengyuan Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jie Qiu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhenhui Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiaofeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Cheng Hou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Huaifeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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4
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Wang L, Zhao N, Bai Y, Liu Y, Xiao S, Wang J. Sequential Nucleophilic Addition and Regioselective Ring‐Expansion Reactions of α‐Diazophosphonates with Isatins:Access to 4‐Phosphonylated‐3‐hydroxyquinolin‐2(1H)‐ones. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Wang
- Institute of Medicinal Plant Development Department of Natural Medicine Chemistry Research Center Chinese Academy of Medical Science and Peking Union Medical College 100193 Beijing CHINA
| | - Nannan Zhao
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Yan Bai
- Zhejiang Agriculture and Forestry University: Zhejiang A and F University College of Food and Health CHINA
| | - Yujia Liu
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Shan Xiao
- Dongguan University of Technology School of Nutrition and Health CHINA
| | - Jihui Wang
- Dongguan University of Technology School of Nutrition and Health CHINA
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5
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Gazzeh H, Rouatbi F, Chniti S, Askri M, Knorr M, Strohmann C, Golz C, Lamsabhi AM. Chemoselective and diastereodivergent synthesis of new spirooxindolo-pyrrolizidines and pyrrolidines stemming from unsymmetrical 1,3-bis(arylidene)tetral-2-ones: a combined experimental and theoretical study. NEW J CHEM 2022. [DOI: 10.1039/d2nj03887k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An experimental and theoretical study of an efficient one-pot three-components cycloaddition reaction leading to pentacyclic dispiropyrrolizidin/pyrrolidinoxindoles endowed by four contiguous stereogenic centres with moderate to good yields was reported.
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Affiliation(s)
- Houda Gazzeh
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR, Department of Chemistry, Faculty of Science of Monastir, 5000 Monastir, Tunisia
| | - Fadwa Rouatbi
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR, Department of Chemistry, Faculty of Science of Monastir, 5000 Monastir, Tunisia
| | - Sami Chniti
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR, Department of Chemistry, Faculty of Science of Monastir, 5000 Monastir, Tunisia
| | - Moheddine Askri
- Laboratory of Heterocyclic Chemistry Natural Product and Reactivity/CHPNR, Department of Chemistry, Faculty of Science of Monastir, 5000 Monastir, Tunisia
| | - Michael Knorr
- Institute UTINAM-UMR CNRS 6213, Université de Franche-Comté, 16 Route de Gray, 25030 Besançon, France
| | - Carsten Strohmann
- Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Christopher Golz
- Georg-August-University Göttingen, Institute of Organic and Biomolecular Chemistry, Tammann-Straße 2, D-37077, Göttingen, Germany
| | - Al Mokhtar Lamsabhi
- Department of Chemistry, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madri, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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6
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Kumar A, Khan WA, Ahamad S, Mohanan K. Trifluorodiazoethane: A versatile building block to access trifluoromethylated heterocycles. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anuj Kumar
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
| | | | - Shakir Ahamad
- Department of Chemistry Aligarh Muslim University Aligarh India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
- Medicinal and Process Chemistry Division Academy of Scientific and Innovative Research Ghaziabad India
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