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Yan D, Wen S, Xing Y, Bu J, Shen K. Nickel-Catalyzed Reductive anti-Arylative Cyclization of Alkynyl Enones with Aryl Halides. J Org Chem 2024; 89:2223-2231. [PMID: 38326966 DOI: 10.1021/acs.joc.3c02120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
A nickel-catalyzed reductive anti-arylative cyclization of alkynyl enones with aryl halides has been developed. The reaction avoids the use of stoichiometric organometallic reagents and has a broad reaction scope and high functional group tolerance. This method offers an efficient way to access a variety of synthetically useful carbocycles that are widely found in many natural products and biologically active molecules.
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Affiliation(s)
- Denghong Yan
- School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Shun Wen
- School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Yunxin Xing
- School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Jie Bu
- School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Kun Shen
- School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
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Tsukamoto H, Ito K, Ueno T, Shiraishi M, Kondo Y, Doi T. Palladium(0)-Catalyzed Anti-Selective Addition-Cyclizations of Alkynyl Electrophiles. Chemistry 2023; 29:e202203068. [PMID: 36333971 PMCID: PMC10108115 DOI: 10.1002/chem.202203068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 11/08/2022]
Abstract
Palladium(0)/monophosphine complexes catalyze anti-selective alkylative, arylative, and alkynylative cyclizations of alkynyl electrophiles with organometallic reagents. The remarkable anti-selectivity results from novel oxidative addition, that is, the nucleophilic attack of electron-rich palladium(0) on the electrophile across the alkyne followed by transmetalation and reductive elimination ("anti-Wacker"-type cyclization). With regard to 5-alkynals, triphenylphosphine (PPh3 )-ligated palladium(0) catalyzes the cyclization of terminal alkynes and conjugated alkenyl- or alkynyl-substituted ones to afford 2-cyclohexen-1-ol and 2-alkylidene-cyclopentanol derivatives, respectively. For 6-alkyl- or 6-aryl-5-alkynals, the cyclization does not proceed with the palladium/PPh3 catalyst; however, it does proceed with palladium/tricyclohexylphosphine (PCy3 ), to yield the former products predominantly. Remarkably, the latter catalyst completely switches the regioselectivity in the cyclization of the conjugated diyne-aldehydes. Notably, palladium/PPh3 -catalyzed cyclizations also proceed with other organometallics or even without them.
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Affiliation(s)
- Hirokazu Tsukamoto
- Department of Pharmaceutical Sciences, Yokohama University of Pharmacy 601 Matano-cho, Totsuka-ku, Yokohama, 245-0066, Japan.,Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Kazuya Ito
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Tatsuhiko Ueno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Mitsugu Shiraishi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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Hu J, Chai Z, Liu W, Wei J, Lv ZJ, Zhang WX. Direct and chlorine-free synthesis of phosphafluorenes or their oxides from white phosphorus. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Maurya RK, Bhukta S, Kishor K, Chatterjee R, Burra AG, Khatravath M, Dandela R. Recent progress towards transition-metal-catalyzed arylative cyclization/annulation reactions with boronic acids. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ma J, Li W, He L, Lv H. Iridium-Catalyzed Chemoelective Asymmetric Hydrogenation of Conjugated Enones with Ferrocene-Based Multidentate Phosphine Ligands. Chem Commun (Camb) 2022; 58:5841-5844. [DOI: 10.1039/d2cc01583h] [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
A series of novel and readily prepared ferrocene-based multidentate phosphine ligands (f-PNNO) have been developed and successfully used in iridium-catalyzed enantioselective 1,2-reduction of ,-unsaturated ketones, delivering chiral allylic alcohols in...
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