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Wang H, Wei Y, He Y, He TJ, Lin YW. Phosphine-Catalyzed Ring-Opening Regioselective Addition of Cyclopropenones with Amides. J Org Chem 2024; 89:10093-10098. [PMID: 38935753 DOI: 10.1021/acs.joc.4c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
A series of amides, including α-bromo hydroxamates, N-alkoxyamides, and N-aryloxyamides, were subjected to phosphine-catalyzed ring-opening O-selective addition with cyclopropenones, producing various special α,β-unsaturated esters containing oxime ether motif, in moderate to excellent yields, with high regioselectivity, and exclusive O-selectivity. The methodology is highly atom-economical, with simple operation procedures, and compatible with a wide substrate scope (more than 44 examples).
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Affiliation(s)
- Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Tian-Juan He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
- Hengyang Medical College, University of South China, Hengyang 421001, P. R. China
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang 421001, P. R. China
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2
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Song Z, Wang W, Liu Z, Lu Y, Wang D. Phosphine-Catalyzed Intermolecular Dienylation of Alkynoate with para-Quinone Methides. J Org Chem 2021; 86:8590-8599. [PMID: 34164976 DOI: 10.1021/acs.joc.1c00226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An interesting remote δ-C 1,6-addition and an isomerization cascade reaction for phosphine-catalyzed activated alkynes have been disclosed. The products featuring a functional diene and a 1,1-diaryl methyl motif have been obtained in moderate to good yields (30-86%) by applying para-quinone methides (p-QMs) and δ-substituted alkynoate with tributylphosphine (PnBu3) catalysis, along with high regioselectivity and stereoselectivity (dr > 20:1). The wide scope of compatible substrates (35 examples), such as indolyl, oxindolyl, ester, and cinnamyl, expand the utility of this methodology. A plausible mechanism and some applications of it have also been presented.
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Affiliation(s)
- Zefeng Song
- Molecular Synthesis Center, Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 23 Hongkong East Road, Qingdao 266071, Shandong Province, China
| | - Weijia Wang
- Molecular Synthesis Center, Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 23 Hongkong East Road, Qingdao 266071, Shandong Province, China
| | - Zhixin Liu
- Molecular Synthesis Center, Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 23 Hongkong East Road, Qingdao 266071, Shandong Province, China
| | - Yue Lu
- Molecular Synthesis Center, Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 23 Hongkong East Road, Qingdao 266071, Shandong Province, China
| | - De Wang
- Molecular Synthesis Center, Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 23 Hongkong East Road, Qingdao 266071, Shandong Province, China.,Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China.,State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, Guangdong, China
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3
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Wang D, Song Z, Zhang J, Xu T. Remote methylene C(sp 3)–H functionalization enabled by organophosphine-catalyzed alkyne isomerization. Org Chem Front 2021. [DOI: 10.1039/d0qo01399d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Non classical EWG-activated arylalkynes as C1 units in organophosphine catalyzed diverse remote sp3 C–H functionalization.
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Affiliation(s)
- De Wang
- Molecular Synthesis Center (MSC) & Key Laboratory of Marine Drugs
- Ministry of Education; School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
- China
| | - Zefeng Song
- Molecular Synthesis Center (MSC) & Key Laboratory of Marine Drugs
- Ministry of Education; School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
- China
| | - Jianyu Zhang
- Molecular Synthesis Center (MSC) & Key Laboratory of Marine Drugs
- Ministry of Education; School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
- China
| | - Tao Xu
- Molecular Synthesis Center (MSC) & Key Laboratory of Marine Drugs
- Ministry of Education; School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
- China
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4
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Kaur J, Kaur BP, Chimni SS. Recent advances in the catalytic synthesis of 3-aminooxindoles: an update. Org Biomol Chem 2020; 18:4692-4708. [DOI: 10.1039/d0ob00777c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
3-Substituted-3-aminooxindoles are versatile scaffolds and these motifs constitute the core structure of number of natural products and biologically active compounds.
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Affiliation(s)
- Jasneet Kaur
- Post-Graduate Department of Chemistry
- Khalsa College Amritsar
- India
| | - Banni Preet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
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5
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Chen P, Zhang QQ, Guo J, Chen LL, Wang YB, Zhang X. An effective preparation of both 1,3-diketones and nitriles from alkynones with oximes as hydroxide sources. Org Biomol Chem 2019; 16:8336-8344. [PMID: 30206631 DOI: 10.1039/c8ob01861h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective phosphine-catalyzed protocol has been established for the syntheses of 1,3-diketones and nitriles from alkynones with oximes as hydroxide surrogates. This method features the use of a phosphine catalyst, compatibility with various functional groups and ambient temperature, which makes this approach very practical. A plausible mechanism was proposed.
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Affiliation(s)
- Pei Chen
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
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6
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Abstract
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of cases, these electrophiles possess carbon-carbon multiple bonds: alkenes (section 2), allenes (section 3), alkynes (section 4), and Morita-Baylis-Hillman (MBH) alcohol derivatives (MBHADs; section 5). Within each of these sections, the reactions are compiled based on the nature of the second starting material-nucleophiles, dinucleophiles, electrophiles, and electrophile-nucleophiles. Nucleophilic phosphine catalysis reactions that occur via the initial addition to starting materials that do not possess carbon-carbon multiple bonds are collated in section 6. Although not catalytic in the phosphine, the formation of ylides through the nucleophilic addition of phosphines to carbon-carbon multiple bond-containing compounds is intimately related to the catalysis and is discussed in section 7. Finally, section 8 compiles miscellaneous topics, including annulations of the Hüisgen zwitterion, phosphine-mediated reductions, iminophosphorane organocatalysis, and catalytic variants of classical phosphine oxide-generating reactions.
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Affiliation(s)
- Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yi Chiao Fan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA
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7
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Nallapati SB, Chuang SC. Phosphine-Catalyzed Reactions with Unsaturated Carbonyl Compounds. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800325] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Shih-Ching Chuang
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 300 Taiwan
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8
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Pierce BM, Simpson BF, Ferguson KH, Whittaker RE. Phosphine-mediated partial reduction of alkynes to form both (E)- and (Z)-alkenes. Org Biomol Chem 2018; 16:6659-6662. [DOI: 10.1039/c8ob01848k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild, tunable method to form both (E)- and (Z)-alkenes from alkynes is reported using PPh3 as a reductant.
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