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Trivalent Rare-Earth Metal Amide Complexes as Catalysts for the Hydrosilylation of Benzophenone Derivatives with HN(SiHMe₂ )₂ by Amine-Exchange Reaction.

ABSTRACT: The rare-earth metal complexes Ln(L¹ )[N(SiHMe₂ )₂ ](thf) (Ln=La, Ce, Y; L¹ =N,N''-bis(pentafluorophenyl)diethylenetriamine dianion) were synthesized by treating Ln[N(SiHMe₂ )₂ ]₃ (thf)₂ with L¹ H₂ . The lanthanum and cerium derivatives are active catalysts for the hydrosilylation of benzophenone derivatives with HN(SiHMe₂ )₂ . An amine-exchange reaction was revealed as a key step of the catalytic cycle, in which Ln-Si-H β-agostic interactions are proposed to promote insertion of the carbonyl moiety into the Si-H bond.

SUBMITTER: Shinohara K

PROVIDER: S-EPMC7745047 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Trivalent Rare-Earth Metal Amide Complexes as Catalysts for the Hydrosilylation of Benzophenone Derivatives with HN(SiHMe2 )2 by Amine-Exchange Reaction.

Shinohara Koichi K Tsurugi Hayato H Anwander Reiner R Mashima Kazushi K

Chemistry (Weinheim an der Bergstrasse, Germany) 20201001 62

The rare-earth metal complexes Ln(L1 )[N(SiHMe2 )2 ](thf) (Ln=La, Ce, Y; L1 =N,N''-bis(pentafluorophenyl)diethylenetriamine dianion) were synthesized by treating Ln[N(SiHMe2 )2 ]3 (thf)2 with L1 H2 . The lanthanum and cerium derivatives are active catalysts for the hydrosilylation of benzophenone derivatives with HN(SiHMe2 )2 . An amine-exchange reaction was reveale ...[more]

PMID: 32634253

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