Moustafa GAI, Kasama K, Higashio K, Akai S. Base-promoted lipase-catalyzed kinetic resolution of atropisomeric 1,1′-biaryl-2,2′-diols.
RSC Adv 2019;
9:1165-1175. [PMID:
35518007 PMCID:
PMC9059663 DOI:
10.1039/c8ra09070j]
[Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 12/24/2018] [Indexed: 12/21/2022] Open
Abstract
Herein we report a dramatic acceleration of the lipase-catalyzed kinetic resolution of atropisomeric 1,1′-biaryl-2,2′-diols by the addition of sodium carbonate. This result likely originates from the increased nucleophilicity of the phenolic hydroxyl group toward the acyl-enzyme intermediate. Under these conditions, various substituted C2-symmetric and non-C2-symmetric binaphthols and biphenols were efficiently resolved with ∼50% conversion in only 13–30 h with excellent enantioselectivity.
The addition of a stoichiometric amount of Na2CO3 dramatically accelerates the lipase-catalyzed kinetic resolution of a range of atropisomeric 1,1′-biaryl-2,2′-diols.![]()
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