51
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Gao C, Zhou Q, Yang L, Zhang X, Fan X. Synthesis of α-Amidoketones through the Cascade Reaction of Carboxylic Acids with Vinyl Azides under Catalyst-Free Conditions. J Org Chem 2020; 85:13710-13720. [PMID: 33112628 DOI: 10.1021/acs.joc.0c01871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An efficient synthesis of α-amidoketone derivatives through the cascade reactions of carboxylic acids with vinyl azides is presented. Compared with literature protocols, notable features of this new method include catalyst-free conditions, broad substrate scope, good tolerance of a wide range of functional groups, and high efficiency. In addition, the synthetic potential of this method as a tool for late-stage modification was convincingly manifested by its application in the structural elaborations of a number of carboxylic acid drug molecules.
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Affiliation(s)
- Cai Gao
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qianting Zhou
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Li Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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52
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Bai D, Li L, Li X, Lu Y, Wu Y, Rajendra Prasad Reddy B, Ning Y. Fluorocyclization of Vinyl Azides for the Formation of 3‐Azido Heterocycles. Chem Asian J 2020; 15:4038-4042. [DOI: 10.1002/asia.202001175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/22/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Diangang Bai
- School of Chemistry and School of Chemistry and Life Science Anshan Normal University Anshan 114005 P. R. China
| | - Linxuan Li
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Xiaomeng Li
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Ying Lu
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Yong Wu
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | | | - Yongquan Ning
- School of Chemistry and School of Chemistry and Life Science Anshan Normal University Anshan 114005 P. R. China
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
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53
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Paveliev SA, Alimkhanova LS, Sergeeva AV, Terent'ev AO. Cerium(IV) ammonium nitrate promoted synthesis of O-phthalimide oximes from vinyl azides and N-hydroxyphthalimide. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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54
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Collins N, Connon R, Sánchez‐Sanz G, Evans P. Isomerisation of Vinyl Sulfones for the Stereoselective Synthesis of Vinyl Azides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Niall Collins
- Centre for Synthesis and Chemical Biology School of Chemistry University College Dublin D04 N2E2 Dublin Ireland
| | - Robert Connon
- Centre for Synthesis and Chemical Biology School of Chemistry University College Dublin D04 N2E2 Dublin Ireland
| | - Goar Sánchez‐Sanz
- Centre for Synthesis and Chemical Biology School of Chemistry University College Dublin D04 N2E2 Dublin Ireland
- Irish Centre of High‐End Computing Grand Canal Quay Dublin 2 Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology School of Chemistry University College Dublin D04 N2E2 Dublin Ireland
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55
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Nie B, Wu W, Ren Q, Wang Z, Zhang J, Zhang Y, Jiang H. Access to Cycloalkeno[ c]-Fused Pyridines via Pd-Catalyzed C(sp 2)-H Activation and Cyclization of N-Acetyl Hydrazones of Acylcycloalkenes with Vinyl Azides. Org Lett 2020; 22:7786-7790. [PMID: 32990446 DOI: 10.1021/acs.orglett.0c02466] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel Pd(II)-catalyzed vinylic C-H activation and cyclization has been developed, reacting a series of small, medium, and large N-acetyl hydrazones of acylcycloalkenes with vinyl azides to access diverse cycloalkeno[c]-fused pyridine scaffolds. This protocol provides progress in C(sp2)-H bond activation of medium to large cycloalkenes, and the target products can be obtained in a specific regioselectivity with good functional group tolerance and a broad substrate scope.
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Affiliation(s)
- Biao Nie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qingyun Ren
- State Key Laboratory of Anti-Infective Drug Development (No. 2015DQ780357), Sunshine Lake Pharma Company, Ltd., Dongguan 523871, China
| | - Zhongqing Wang
- State Key Laboratory of Anti-Infective Drug Development (No. 2015DQ780357), Sunshine Lake Pharma Company, Ltd., Dongguan 523871, China
| | - Ji Zhang
- State Key Laboratory of Anti-Infective Drug Development (No. 2015DQ780357), Sunshine Lake Pharma Company, Ltd., Dongguan 523871, China
| | - Yingjun Zhang
- State Key Laboratory of Anti-Infective Drug Development (No. 2015DQ780357), Sunshine Lake Pharma Company, Ltd., Dongguan 523871, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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56
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Chakrabarty A, Mukherjee S. Iridium-Catalyzed Enantioselective α-Allylic Alkylation of Amides Using Vinyl Azide as Amide Enolate Surrogate. Org Lett 2020; 22:7752-7756. [PMID: 32936647 DOI: 10.1021/acs.orglett.0c03002] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Among the unstabilized enolates used as nucleophiles in iridium-catalyzed asymmetric allylic alkylation reactions, amide enolates are the least explored. Vinyl azides are now employed as amide enolate surrogates in Ir-catalyzed asymmetric allylic alkylation with branched allylic alcohols as the allylic electrophile. Competing reaction pathways are suppressed through the systematic tuning of the steric and electronic properties of vinyl azide to effect the α-allylic alkylation of secondary acetamides with high atom economy, exclusive branched selectivity, and mostly excellent enantioselectivity.
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Affiliation(s)
- Aditya Chakrabarty
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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57
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Zhong Z, Xiao Z, Liu X, Cao W, Feng X. Catalytic asymmetric synthesis of 3,2'-pyrrolinyl spirooxindoles via conjugate addition/Schmidt-type rearrangement of vinyl azides and ( E)-alkenyloxindoles. Chem Sci 2020; 11:11492-11497. [PMID: 34094393 PMCID: PMC8162805 DOI: 10.1039/d0sc03776a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/25/2020] [Indexed: 12/14/2022] Open
Abstract
A catalytic asymmetric conjugate addition/Schmidt-type rearrangement of vinyl azides and (E)-alkenyloxindoles was realized. It afforded a variety of optically active 3,2'-pyrrolinyl spirooxindoles with high yields (up to 98%), and excellent diastereo- and enantioselectivities (up to 98% ee, >19 : 1 dr), even at the gram-scale in the presence of a chiral N,N'-dioxide-nickel(ii) complex. In addition, a possible catalytic cycle and transition state model were proposed to rationalize the stereoselectivity.
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Affiliation(s)
- Ziwei Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Zhijie Xiao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China
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58
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Harisha MB, Dhanalakshmi P, Suresh R, Kumar RR, Muthusubramanian S. Access to highly substituted oxazoles by the reaction of α-azidochalcone with potassium thiocyanate. Beilstein J Org Chem 2020; 16:2108-2118. [PMID: 32952727 PMCID: PMC7476590 DOI: 10.3762/bjoc.16.178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/21/2020] [Indexed: 12/27/2022] Open
Abstract
The reactivity of α-azidochalcones has been explored for the preparation of highly substituted oxazoles via a 2H-azirine intermediate. The azidochalcones, when treated with potassium thiocyanate in the presence of potassium persulfate, lead to 2,4,5-trisubstituted oxazoles in good yields. Incidentally, 2-aminothiazoles are the products when ferric nitrate is employed instead of persulfate in the above reaction.
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Affiliation(s)
- Mysore Bhyrappa Harisha
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India.,Eurofins-Advinus Limited, Phase II, Peenya Industrial Area, Bangalore-560 058, India
| | - Pandi Dhanalakshmi
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India.,Department of Inorganic and Physical Chemistry, Indian Institute of Science (IISc), Bangalore-560 012, India
| | - Rajendran Suresh
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India
| | - Raju Ranjith Kumar
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India
| | - Shanmugam Muthusubramanian
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamil Nadu, India
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59
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Xiu H, Li T, Song C, Ma Y. Azidative Aromatization of Quinone Methides Under Transition Metal and Solvent Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Haiping Xiu
- School of Pharmaceutical Science Shandong University Wenhua Road No. 44 250012 Jinan P. R. China
| | - Tingting Li
- Department of Chemistry Shandong University Shanda South Road No. 27 250100 Jinan P. R. China
| | - Chun Song
- School of Pharmaceutical Science Shandong University Wenhua Road No. 44 250012 Jinan P. R. China
- State Key Laboratory of Microbial Technology Binhai Road No. 72 266237 Qingdao P. R. China
| | - Yudao Ma
- Department of Chemistry Shandong University Shanda South Road No. 27 250100 Jinan P. R. China
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60
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Pang JH, Chiba S. gem-Difluorinative 1,2-azide migration of vinyl azides enables an expedient synthesis of β-difluoroalkyl azides. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9773-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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61
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Paveliev SA, Churakov AI, Alimkhanova LS, Segida OO, Nikishin GI, Terent'ev AO. Electrochemical Synthesis of
O
‐Phthalimide Oximes from
α
‐Azido Styrenes
via
Radical Sequence: Generation, Addition and Recombination of Imide‐
N
‐Oxyl and Iminyl Radicals with C−O/N−O Bonds Formation. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000618] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Stanislav A. Paveliev
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
| | - Artem I. Churakov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
| | - Liliya S. Alimkhanova
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
| | - Oleg O. Segida
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
| | - Gennady I. Nikishin
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
| | - Alexander O. Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences 47 Leninsky prosp. Moscow 119991 Russian Federation
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62
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Han M, Yang M, Wu R, Li Y, Jia T, Gao Y, Ni HL, Hu P, Wang BQ, Cao P. Highly Enantioselective Iridium-Catalyzed Coupling Reaction of Vinyl Azides and Racemic Allylic Carbonates. J Am Chem Soc 2020; 142:13398-13405. [DOI: 10.1021/jacs.0c01766] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Min Han
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Min Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Rui Wu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Yang Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Tao Jia
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Yuanji Gao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Peng Cao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
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63
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Borra S, Borkotoky L, Newar UD, Das B, Maurya RA. Photocatalyst‐Free Visible‐Light Enabled Synthesis of Substituted Pyrroles from
α
‐Keto Vinyl Azides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000562] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Satheesh Borra
- Applied Organic Chemistry GroupChemical Sciences & Technology DivisionCSIR-North East Institute of Science & Technology (NEIST) Jorhat 785006 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-NEIST Jorhat 785006 India
| | - Lodsna Borkotoky
- Applied Organic Chemistry GroupChemical Sciences & Technology DivisionCSIR-North East Institute of Science & Technology (NEIST) Jorhat 785006 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-NEIST Jorhat 785006 India
| | - Uma Devi Newar
- Applied Organic Chemistry GroupChemical Sciences & Technology DivisionCSIR-North East Institute of Science & Technology (NEIST) Jorhat 785006 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-NEIST Jorhat 785006 India
| | - Babulal Das
- Department of ChemistryIndian Institute of Technology Guwahati 781039 India
| | - Ram Awatar Maurya
- Applied Organic Chemistry GroupChemical Sciences & Technology DivisionCSIR-North East Institute of Science & Technology (NEIST) Jorhat 785006 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-NEIST Jorhat 785006 India
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64
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Zhang X, Zhang Z, Song JN, Wang Z. Reductive radical-initiated 1,2-C migration assisted by an azidyl group. Chem Sci 2020; 11:7921-7926. [PMID: 34123076 PMCID: PMC8163324 DOI: 10.1039/d0sc02559c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report here a novel reductive radical-polar crossover reaction that is a reductive radical-initiated 1,2-C migration of 2-azido allyl alcohols enabled by an azidyl group. The reaction tolerates diverse migrating groups, such as alkyl, alkenyl, and aryl groups, allowing access to n+1 ring expansion of small to large rings. The possibility of directly using propargyl alcohols in one-pot is also described. Mechanistic studies indicated that an azidyl group is a good leaving group and provides a driving force for the 1,2-C migration.
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Affiliation(s)
- Xueying Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University Changchun 130024 China
| | - Zhansong Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University Changchun 130024 China
| | - Jin-Na Song
- School of Life Science, Jilin University Changchun 130012 China
| | - Zikun Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University Changchun 130024 China
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65
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Terhorst S, Tiwari DP, Meister D, Petran B, Rissanen K, Bolm C. Syntheses of Trifluoroethylated N-Heterocycles from Vinyl Azides and Togni's Reagent Involving 1, n-Hydrogen-Atom Transfer Reactions. Org Lett 2020; 22:4766-4770. [PMID: 32496070 DOI: 10.1021/acs.orglett.0c01566] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2,2,2-Trifluoroethyl-substituted 3-oxazolines, 3-thiazolines, and 5,6-dihydro-2H-1,3-oxazines have been obtained by reacting substituted vinyl azides with a combination of Togni's reagent and substoichiometric amounts of iron(II) chloride. The results of density functional theory calculations support the proposed mechanism involving 1,n-hydrogen-atom transfer reactions.
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Affiliation(s)
- Steven Terhorst
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Deo Prakash Tiwari
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Daniela Meister
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Benedict Petran
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, P.O. Box. 35, FI-40014 Jyväskylä, Finland
| | - Carsten Bolm
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
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66
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Nakanishi T, Kikuchi J, Kaga A, Chiba S, Terada M. One‐Pot Synthesis of Enantioenriched β‐Amino Secondary Amides via an Enantioselective [4+2] Cycloaddition Reaction of Vinyl Azides with
N
‐Acyl Imines Catalyzed by a Chiral Brønsted Acid. Chemistry 2020; 26:8230-8234. [DOI: 10.1002/chem.202002049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Taishi Nakanishi
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Jun Kikuchi
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Atsushi Kaga
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Masahiro Terada
- Department of ChemistryGraduate School of ScienceTohoku University Aramaki Aoba-ku Sendai 980-8578 Japan
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67
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Abstract
Indium trichloride catalyzes the reaction of vinyl azides with unfunctionalized indoles to give vinyl indoles. This is the first example of displacement of the azide group by a carbon nucleophile while preserving the vinyl function. The protocol employs very mild reaction conditions and offers excellent yields of diverse 3-vinyl indoles. It is amenable to gram scale. Access to a library of 3,3'-bis(indolyl)methanes through condensation of vinyl azides with 2 equiv of an indole is demonstrated.
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Affiliation(s)
- Atul A More
- Department of Chemical Sciences, Faculty of Natural Science, Ariel University, Ariel 4070000, Israel
| | - Alex M Szpilman
- Department of Chemical Sciences, Faculty of Natural Science, Ariel University, Ariel 4070000, Israel
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68
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Cao S, Ji Q, Li H, Pang M, Yuan H, Zhang J, Bi X. AgN3-Catalyzed Hydroazidation of Terminal Alkynes and Mechanistic Studies. J Am Chem Soc 2020; 142:7083-7091. [DOI: 10.1021/jacs.0c00836] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shanshan Cao
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qinghe Ji
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Huaizhi Li
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Maolin Pang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Haiyan Yuan
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jingping Zhang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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69
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More AA, Santra SK, Szpilman AM. Azido-Enolonium Species in C-C and C-N Bond-Forming Coupling Reactions. Org Lett 2020; 22:768-771. [PMID: 31916772 DOI: 10.1021/acs.orglett.9b03824] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vinyl azides react with boron trifluoride activated Koser's hypervalent iodine reagent to afford azido-enolonium species. These previously unknown azido-enolonium species react efficiently with aromatic compounds, allyltrimethylsilane, and azoles under mild conditions, with no need for a transition-metal catalyst, forming C-C and C-N bonds to give a variety of α-functionalized ketones. The intermediacy of the proposed azido-enolonium species is supported by spectroscopic studies.
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Affiliation(s)
- Atul A More
- Department of Chemical Sciences, Faculty of Natural Sciences , Ariel University , Ariel 4070000 , Israel
| | - Sourav K Santra
- Department of Chemical Sciences, Faculty of Natural Sciences , Ariel University , Ariel 4070000 , Israel
| | - Alex M Szpilman
- Department of Chemical Sciences, Faculty of Natural Sciences , Ariel University , Ariel 4070000 , Israel
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70
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Li L, Cao S, Lin F, Liao P, Ning Y. Oxidative Fluorocyclization of Vinyl Azides Leading to 5-Azido,5-fluoro-1,3-oxolan-2-one. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901699] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lin Li
- Northeast Normal University; Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Renmin Street, No. 5268 130024 Changchun China
| | - Shanshan Cao
- Northeast Normal University; Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Renmin Street, No. 5268 130024 Changchun China
| | - Fanyi Lin
- Northeast Normal University; Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Renmin Street, No. 5268 130024 Changchun China
| | - Peiqiu Liao
- Northeast Normal University; Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Renmin Street, No. 5268 130024 Changchun China
| | - Yongquan Ning
- Northeast Normal University; Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Renmin Street, No. 5268 130024 Changchun China
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71
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72
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Banerjee U, Karney WL, Ault BS, Gudmundsdottir AD. Photolysis of 5-Azido-3-Phenylisoxazole at Cryogenic Temperature: Formation and Direct Detection of a Nitrosoalkene. Molecules 2020; 25:molecules25030543. [PMID: 32012736 PMCID: PMC7037410 DOI: 10.3390/molecules25030543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 01/15/2023] Open
Abstract
To enhance the versatility of organic azides in organic synthesis, a better understanding of their photochemistry is required. Herein, the photoreactivity of azidoisoxazole 1 was characterized in cryogenic matrices with IR and UV-Vis absorption spectroscopy. The irradiation (λ = 254 nm) of azidoisoxazole 1 in an argon matrix at 13 K and in glassy 2-methyltetrahydrofuran (mTHF) at 77 K yielded nitrosoalkene 3. Density functional theory (DFT) and complete active space self-consistent field (CASSCF) calculations were used to aid the characterization of nitrosoalkene 3 and to support the proposed mechanism for its formation. It is likely that nitrosoalkene 3 is formed from the singlet excited state of azidoisoxazole 1 via a concerted mechanism or from cleavage of an intermediate singlet nitrene that does not undergo efficient intersystem crossing to its triplet configuration.
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Affiliation(s)
- Upasana Banerjee
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
| | - William L. Karney
- Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, CA 94117, USA;
| | - Bruce S. Ault
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
| | - Anna D. Gudmundsdottir
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
- Correspondence:
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73
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Liao Y, Ran Y, Liu G, Liu P, Liu X. Transition-metal-free radical relay cyclization of vinyl azides with 1,4-dihydropyridines involving a 1,5-hydrogen-atom transfer: access to α-tetralone scaffolds. Org Chem Front 2020. [DOI: 10.1039/d0qo01042a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The remote C(sp3)–H functionalization enabled by a radical-mediated 1,5-hydrogen-atom transfer (HAT) process using vinyl azides and 1,4-dihydropyridines as precursors has been described.
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Affiliation(s)
- Yangzhen Liao
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province
- Generic Drug Research Center of Guizhou Province
- School of Pharmacy
- Zunyi Medical University
- Zunyi 563000
| | - Yu Ran
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province
- Generic Drug Research Center of Guizhou Province
- School of Pharmacy
- Zunyi Medical University
- Zunyi 563000
| | - Guijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province
- Generic Drug Research Center of Guizhou Province
- School of Pharmacy
- Zunyi Medical University
- Zunyi 563000
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province
- Generic Drug Research Center of Guizhou Province
- School of Pharmacy
- Zunyi Medical University
- Zunyi 563000
| | - Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province
- Generic Drug Research Center of Guizhou Province
- School of Pharmacy
- Zunyi Medical University
- Zunyi 563000
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74
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Wu W, Chen Q, Tian Y, Xu Y, Huang Y, You Y, Weng Z. Synthesis of polysubstituted 5-trifluoromethyl isoxazoles via denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride. Org Chem Front 2020. [DOI: 10.1039/d0qo00243g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A general method for the synthesis of 5-(trifluoromethyl)isoxazoles by denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride has been developed.
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Affiliation(s)
- Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Qiaoling Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yishi Tian
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yihui Xu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yi You
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
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75
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Kumar Das D, Kannaujiya VK, Sadhu MM, Ray SK, Singh VK. BF 3·OEt 2-Catalyzed Vinyl Azide Addition to in Situ Generated N-Acyl Iminium Salts: Synthesis of 3-Oxoisoindoline-1-acetamides. J Org Chem 2019; 84:15865-15876. [PMID: 31741383 DOI: 10.1021/acs.joc.9b02127] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BF3·OEt2-catalyzed nucleophilic addition of vinyl azides to in situ generated N-acyl iminium salts obtained from 3-hydroxyisoindolinones is described in this article. The procedure is operationally simple, mild, additive, and metal-free. The reaction proceeds smoothly at ambient temperature with a wide range of 3-hydroxyisoindol-1-ones and vinyl azides to afford 3-oxoisoindoline-1-acetamides (32 examples) in high yields (up to 97%). Furthermore, the synthetic utility of this methodology is depicted by exploiting the reactivity of an amide functionality in the products.
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Affiliation(s)
- Deb Kumar Das
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal , MP 462066 , India
| | - Vinod Kumar Kannaujiya
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal , MP 462066 , India
| | - Milon M Sadhu
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal , MP 462066 , India
| | - Sumit Kumar Ray
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal , MP 462066 , India
| | - Vinod K Singh
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur , UP 208016 , India
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76
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Cristófalo AE, Nieto PM, Uhrig ML. Synthesis of (1→3) Thiodisaccharides of GlcNAc and the Serendipitous Formation of 2,3-Dideoxy-(1→2)-thiodisaccharides through a Vinyl Azide Intermediate. J Org Chem 2019; 85:306-317. [PMID: 31802661 DOI: 10.1021/acs.joc.9b01883] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The syntheses of β-S-GlcA(1→3)GlcNAc and β-S-Gal(1→3)GlcNAc thiodisaccharides, which can be considered mimetics of the repeating units of hyaluronan and keratan respectively, were achieved by SN2 displacement of a triflate group allocated at the 3-position of a convenient 2-azido-4,6-O-benzylidene-2-deoxy-β-d-allopyranose precursor by the corresponding nucleophilic suitable protected thioaldoses derived from glucuronic acid (GlcA) and galactose (Gal). The study of the reaction led to the finding that the vinyl azide formed by competitive E2 reaction of the mentioned triflate was an interesting precursor of a new kind of 2,3-dideoxy-2-azido-(1→2) thiodisaccharides through an addition reaction. Determination of the stereochemistry of the new stereocenter at C-2 was achieved by NOESY experiments. Final protecting group manipulation of the (1→3) thiodisaccharides led to a family of derivatives that could be used as building blocks for the synthesis of complex glycomimetics.
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Affiliation(s)
- Alejandro Ezequiel Cristófalo
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Ciudad Universitaria , Pabellón 2, C1428EGA Buenos Aires , Argentina.,CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR) , C1428EGA Buenos Aires , Argentina
| | - Pedro M Nieto
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), cicCartuja , CSIC and Universidad de Sevilla , 41092 Sevilla , España
| | - María Laura Uhrig
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Ciudad Universitaria , Pabellón 2, C1428EGA Buenos Aires , Argentina.,CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR) , C1428EGA Buenos Aires , Argentina
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77
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Koo H, Kim HY, Oh K. Continuous Flow Synthesis of Isoxazoles via Vinyl Azides from Friedel–Crafts Acylation of Alkynes: A Modulated Troubleshooting Optimization Approach. Org Lett 2019; 21:10063-10068. [DOI: 10.1021/acs.orglett.9b04010] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hyungmo Koo
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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78
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Shields DJ, Sarkar SK, Sriyarathne HDM, Brown JR, Wentrup C, Abe M, Gudmundsdottir AD. Transforming Triplet Vinylnitrene into Triplet Alkylnitrene at Cryogenic Temperatures. Org Lett 2019; 21:7194-7198. [DOI: 10.1021/acs.orglett.9b01950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dylan J. Shields
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | - Sujan K. Sarkar
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | | | - Jocelyn R. Brown
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | - Curt Wentrup
- School of Chemistry and Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Anna D. Gudmundsdottir
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
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79
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Thirupathi N, Wei F, Tung CH, Xu Z. Divergent synthesis of chiral cyclic azides via asymmetric cycloaddition reactions of vinyl azides. Nat Commun 2019; 10:3158. [PMID: 31320649 PMCID: PMC6639305 DOI: 10.1038/s41467-019-11134-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/25/2019] [Indexed: 12/16/2022] Open
Abstract
Vinyl azides, bearing conjugated azide and alkene functional groups, have been recognized as versatile building blocks in organic synthesis. In general vinyl azides act as 3-atom (CCN) synthons through the fast release of molecular nitrogen and have been extensively utilized in the construction of structurally diverse N-heterocycles. Keeping the azide moiety intact in organic transformations to synthesis chiral azides is an important but challenging task. Herein, we report an enantioselective copper(II)/BOX-catalyzed cycloaddition of vinyl azides, generating diverse chiral cyclic azides. α-Aryl substituted vinyl azides react with unsaturated keto esters through an inverse-electron-demand hetero-Diels-Alder reaction to afford chiral azido dihydropyrans with excellent enatioselectivities. In contrast, cyclohexenyl azides undergo a diastereo- and enantio-selective Diels-Alder reaction giving important azido octahydronaphthalenes with three continuous stereogenic centers. Notable features of these reactions include a very broad scope, mild reaction conditions and 100% atom economy. Vinyl azides generally act as 3-atom synthon through the fast release of molecular nitrogen, whereas keeping the azide group intact is more challenging. Here, the authors show a copper-catalyzed enantioselective cycloaddition of two types of vinyl azides generating a diverse pool of valuable chiral cyclic azides.
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Affiliation(s)
- Nuligonda Thirupathi
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, 250100, Jinan, Shandong, China
| | - Fang Wei
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, 250100, Jinan, Shandong, China
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, 250100, Jinan, Shandong, China
| | - Zhenghu Xu
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, 250100, Jinan, Shandong, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032, Shanghai, PR China.
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80
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Tang YQ, Yang JC, Wang L, Fan M, Guo LN. Ni-Catalyzed Redox-Neutral Ring-Opening/Radical Addition/Ring-Closing Cascade of Cycloketone Oxime Esters and Vinyl Azides. Org Lett 2019; 21:5178-5182. [DOI: 10.1021/acs.orglett.9b01773] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yu-Qi Tang
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Jun-Cheng Yang
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Le Wang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Mingjin Fan
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Li-Na Guo
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, P. R. China
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81
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Borra S, Borkotoky L, Newar UD, Kalwar A, Das B, Maurya RA. Visible light triggered photo-decomposition of vinyl azides to (E)-stilbene derivatives via 1,2-acyl migration. Org Biomol Chem 2019; 17:5971-5981. [PMID: 31165843 DOI: 10.1039/c9ob01035a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient photocatalyst-free visible light assisted synthetic route to various (E)-stilbene derivatives was developed. The reaction proceeds through a denitrogenative photo-decomposition of vinyl azides into 2H-azirines followed by neighboring amino group assisted ring opening, 1,2-acyl migration and enolization. The photochemical reaction offers light harvesting without any photocatalyst to access a wide variety of substituted (E)-stilbenes in moderate to high yields.
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Affiliation(s)
- Satheesh Borra
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology (NEIST), Jorhat-785006, Assam, India.
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82
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Carlson AS, Topczewski JJ. Allylic azides: synthesis, reactivity, and the Winstein rearrangement. Org Biomol Chem 2019; 17:4406-4429. [PMID: 30969292 PMCID: PMC6530792 DOI: 10.1039/c8ob03178a] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Organic azides are useful synthetic intermediates, which demonstrate broad reactivity. Unlike most organic azides, allylic azides can spontaneously rearrange to form a mixture of isomers. This rearrangement has been named the Winstein rearrangement. Using allylic azides can result in low yields and azide racemization in some synthetic contexts due to the Winstein rearrangement. Effort has been made to understand the mechanism of the Winstein rearrangement and to take advantage of this process. Several guiding principles can be used to identify which azides will produce a mixture of isomers and which will resist rearrangement. Selective reaction conditions can be used to differentiate the azide isomers in a dynamic manner. This review covers all aspects of allylic azides including their synthesis, their reactivity, the mechanism of the Winstein rearrangement, and reactions that can selectively elaborate an azide isomer. This review covers the literature from Winstein's initial report to early 2019.
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Affiliation(s)
- Angela S Carlson
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
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83
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Yoshimitsu T. Strategic Use of Nitrogen Free Radicals in Natural Product Synthesis: Total Synthesis of Agelastatin A. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takehiko Yoshimitsu
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University
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84
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Cen J, Wu Y, Li J, Huang L, Wu W, Zhu Z, Yang S, Jiang H. Switchable Reactivity between Vinyl Azides and Terminal Alkyne by Nano Copper Catalysis. Org Lett 2019; 21:2090-2094. [PMID: 30869904 DOI: 10.1021/acs.orglett.9b00373] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel nano copper-catalyzed substrate-dependent chemodivergent transformation of vinyl azides with a terminal alkyne is disclosed. 2,5-Disubstituted pyrroles were selectively obtained in high yield with aryl alkynes and aliphatic alkynes, whereas 2,3,4-trisubstituted pyrroles were formed with silylated alkynes. This switchable method provides a controllable and facile access to both multisubstituted pyrrole scaffolds with high efficiency, excellent regioselectivity, and good functional group compatibility.
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Affiliation(s)
- Jinghe Cen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Yaodan Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Liangbin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Zhongzhi Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510640 , P. R. China
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85
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Shen MH, Liang XC, Li C, Wu H, Qu HY, Wang FM, Xu HD. Rhodium promoted intramolecular [4 + 2] cycloaddition of 2-azidodiene with alkyne: A transition metal catalysis approach to challenging fused bicyclic vinyl azide. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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86
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Zhou Y, Xu XP, Ji SJ. Cooperation of Mn(III)/Brønsted Acid for the Synthesis of Quindoline Derivatives via Dehydroxylation/Azidation/Cyclization Cascade of Diaryl(1H-indol-2-yl)methanols with Trimethylsilyl Azide. Org Lett 2019; 21:2039-2042. [DOI: 10.1021/acs.orglett.9b00164] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Zhou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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87
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Lemport PS, Smolyar IV, Khrustalev VN, Roznyatovsky VA, Popov AV, Kobelevskaya VA, Rozentsveig IB, Nenajdenko VG. 3,3-Diazidoenones – new types of highly reactive bis-azides. Preparation and synthetic transformations. Org Chem Front 2019. [DOI: 10.1039/c8qo01214h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of highly reactive 3,3-diazidoenones was obtained. Their chemistry was investigated by both experimental studies and DFT calculations.
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Affiliation(s)
- Pavel S. Lemport
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russian Federation
| | - Ivan V. Smolyar
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russian Federation
| | - Victor N. Khrustalev
- Department of Inorganic Chemistry
- Peoples’ Friendship University of Russia
- Russian Federation
| | | | - Alexander V. Popov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
| | - Valentina A. Kobelevskaya
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
| | - Igor B. Rozentsveig
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- Russian Federation
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88
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Borra S, Chandrasekhar D, Newar UD, Maurya RA. Access to 2,3-Fused Pyrroles via Visible Light Driven Coupling of α-Azidochalcones with 1/2-Naphthols, or 2-Hydroxy-1,4-Naphthoquinone. J Org Chem 2018; 84:1042-1052. [PMID: 30547589 DOI: 10.1021/acs.joc.8b02459] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
α-Azidochalcones were coupled with 1/2-naphthols or 2-hydroxy-1,4-naphthoquinone using Ru(bpy)3(PF6)2 as a photocatalyst under blue LED light irradiation to yield 2,3-fused pyrroles in high yields (68-84%). The overall transformation involves photosensitized decomposition of α-azidochalcones into highly reactive 2 H-azirines which are trapped by 1/2-naphthols or 2-hydroxy-1,4-naphthoquinone, leading to the construction of two new C-N and one new C-C bonds.
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Affiliation(s)
- Satheesh Borra
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division , CSIR-North East Institute of Science & Technology (NEIST) , Jorhat - 785006 , Assam , India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-NEIST Jorhat - 785006 , Assam , India
| | - D Chandrasekhar
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division , CSIR-North East Institute of Science & Technology (NEIST) , Jorhat - 785006 , Assam , India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-NEIST Jorhat - 785006 , Assam , India
| | - Uma Devi Newar
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division , CSIR-North East Institute of Science & Technology (NEIST) , Jorhat - 785006 , Assam , India
| | - Ram Awatar Maurya
- Applied Organic Chemistry Group, Chemical Sciences & Technology Division , CSIR-North East Institute of Science & Technology (NEIST) , Jorhat - 785006 , Assam , India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-NEIST Jorhat - 785006 , Assam , India
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89
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Metal‐Free Regioselective Chloroazidation of Internal Alkynes. Chemistry 2018; 25:981-984. [DOI: 10.1002/chem.201805320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Indexed: 12/12/2022]
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90
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Li Z, Huo T, Li L, Feng S, Wang Q, Zhang Z, Pang S, Zhang Z, Wang P, Zhang Z. Rh-Catalyzed Reaction of Vinyl Azides with Isonitriles and Alkynes/Benzynes. Org Lett 2018; 20:7762-7766. [DOI: 10.1021/acs.orglett.8b03115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zongyang Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Tongyu Huo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Li Li
- National Institute of Biological Sciences (NIBS), Beijing 102206, China
| | - Shuo Feng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Qian Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhen Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Sen Pang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhiyuan Zhang
- National Institute of Biological Sciences (NIBS), Beijing 102206, China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhenhua Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, and Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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91
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Fang G, Liu Z, Cao S, Yuan H, Zhang J, Pan L. Interruption of Formal Schmidt Rearrangement/Hosomi-Sakurai Reaction of Vinyl Azides with Allyl/Propargylsilanes. Org Lett 2018; 20:7113-7116. [PMID: 30387360 DOI: 10.1021/acs.orglett.8b03062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An interrupted Schmidt rearrangement/Hosomi-Sakurai reaction of N-tosyl and S-substituted vinyl azides is reported. With BF3·Et2O as a Lewis acid promoter, the denitrogenative fragmentation of vinyl azides facilitates the generation of the N/ S-stabilized carbocations, which further undergo nucleophilic addition by allyl/propargylsilanes for C-C bond formation. As a result, a variety of homoallylic/allenylic amines can be afforded in good yields under mild reaction conditions with well-defined functional-group tolerance.
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Affiliation(s)
- Guichun Fang
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Zhenhua Liu
- College of Chemistry, Chemical Engineering and Materials Science , Shandong Normal University , Jinan 250014 , China
| | - Shanshan Cao
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Haiyan Yuan
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Jingping Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry , Northeast Normal University , Changchun 130024 , China
| | - Ling Pan
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry , Northeast Normal University , Changchun 130024 , China
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92
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Arepally S, Babu VN, Polu A, Sharada DS. PIDA/TBAB-Promoted Oxidative Geminal Dibromofunctionalization of Alkynes: Direct Synthesis of Geminal Diazides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801081] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sagar Arepally
- Department of Chemistry; Indian Institute of Technology Hyderabad; 502 285 Kandi - Sangareddy Telangana INDIA
| | - Venkata Nagarjuna Babu
- Department of Chemistry; Indian Institute of Technology Hyderabad; 502 285 Kandi - Sangareddy Telangana INDIA
| | - Ashok Polu
- Department of Chemistry; Indian Institute of Technology Hyderabad; 502 285 Kandi - Sangareddy Telangana INDIA
| | - Duddu S. Sharada
- Department of Chemistry; Indian Institute of Technology Hyderabad; 502 285 Kandi - Sangareddy Telangana INDIA
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93
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Jie L, Wang L, Xiong D, Yang Z, Zhao D, Cui X. Synthesis of 2-Arylindoles through Pd(II)-Catalyzed Cyclization of Anilines with Vinyl Azides. J Org Chem 2018; 83:10974-10984. [DOI: 10.1021/acs.joc.8b01618] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lianghua Jie
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Lianhui Wang
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Dan Xiong
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Zi Yang
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Di Zhao
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
| | - Xiuling Cui
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P.R. China
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94
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Cen J, Li J, Zhang Y, Zhu Z, Yang S, Jiang H. Direct Assembly of 4-Substituted Quinolines with Vinyl Azides as a Dual Synthon via C═C and C–N Bond Cleavage. Org Lett 2018; 20:4434-4438. [DOI: 10.1021/acs.orglett.8b01718] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinghe Cen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yu Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Zhongzhi Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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95
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Zhou B, Zheng L, Xu Z, Jin H, Wu Q, Li T, Liu Y. Synthesis of Functionalized Phenathridine-6-carbonitriles via Copper-catalyzed Annulation of Vinyl Azides and NaN3
in the Presence of PhI(OAc)2. ChemistrySelect 2018. [DOI: 10.1002/slct.201801772] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Bingwei Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Limeng Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Zheng Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Hongwei Jin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Qingan Wu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering; Nanyang Normal University, Nangyang, Henan; 473061 P. R. China
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Zhejiang University of Technology, Hangzhou; 310014 P. R. China
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96
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Rasool F, Ahmed A, Hussain N, Yousuf SK, Mukherjee D. One-Pot Regioselective and Stereoselective Synthesis of C-Glycosyl Amides from Glycals Using Vinyl Azides as Glycosyl Acceptors. Org Lett 2018; 20:4036-4039. [DOI: 10.1021/acs.orglett.8b01602] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Faheem Rasool
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu, India
- Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
| | - Ajaz Ahmed
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu, India
- Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
| | - Nazar Hussain
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu, India
- Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
| | - Syed Khalid Yousuf
- Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
- Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Srinagar, India
| | - Debaraj Mukherjee
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu, India
- Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Srinagar, India
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97
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Kanchupalli V, Katukojvala S. [1+1+3] Annulation of Diazoenals and Vinyl Azides: Direct Synthesis of Functionalized 1-Pyrrolines through Olefination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201801976] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Vinaykumar Kanchupalli
- Department of Chemistry; Indian Institute of Science Education & Research BhopaI; Madhya Pradesh 462066 India
| | - Sreenivas Katukojvala
- Department of Chemistry; Indian Institute of Science Education & Research BhopaI; Madhya Pradesh 462066 India
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98
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Kanchupalli V, Katukojvala S. [1+1+3] Annulation of Diazoenals and Vinyl Azides: Direct Synthesis of Functionalized 1-Pyrrolines through Olefination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801976] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Vinaykumar Kanchupalli
- Department of Chemistry; Indian Institute of Science Education & Research BhopaI; Madhya Pradesh 462066 India
| | - Sreenivas Katukojvala
- Department of Chemistry; Indian Institute of Science Education & Research BhopaI; Madhya Pradesh 462066 India
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