Kikukawa Y, Kawabata H, Hayashi Y. Synthesis of cyanooxovanadate and cyanosilylation of ketones.
RSC Adv 2021;
11:31688-31692. [PMID:
35496882 PMCID:
PMC9041443 DOI:
10.1039/d1ra05879g]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/14/2021] [Indexed: 11/21/2022] Open
Abstract
The cyanosilylation was performed by using metavanadate catalysts, and in situ measurements revealed the formation of [VO2(CN)3]2− and [VO4TMS2]− under reaction conditions. The reaction of [VO2(CN)3]2−, trimethylsilyl cyanide (TMSCN), and water afforded [VO4TMS2]− and CN−, which reacted with ketones to yield the corresponding cyanohydrin trimethylsilyl ethers over [VO2(CN)3]2−. Compound [VO2(CN)3]2− showed high catalytic performance for cyanosilylation of various carbonyl compounds. In the case of n-hexanal, turnover frequency reached up to 250 s−1.
Two key catalytic vanadium species involved in cyanosilylation of ketones were observed by in situ measurement.![]()
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