Catalytic Asymmetric Synthesis of Silicon‐Stereogenic Dihydrodibenzosilines: Silicon Central‐to‐Axial Chirality Relay
Angewandte Chemie(2021)
摘要
A Rh-catalyzed asymmetric synthesis of silicon-stereogenic dihydrodibenzosilines featuring axially chiral 6-membered bridged biaryls is demonstrated. In the presence of a Rh-I catalyst with a chiral diphosphine ligand, a wide range of dihydrodibenzosilines containing both silicon-central and axial chiralities are conveniently constructed in excellent enantioselectivities via dehydrogenative C(sp(3))-H silylation. Absolute configuration analysis by single-crystal X-ray structures revealed a novel silicon central-to-axial chirality relay phenomenon, which we believe will inspire further research in the field of asymmetric catalysis and chiroptical materials.
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关键词
axial chirality,chirality relay,enantioselective C−,H silylation,silicon-central chirality,silicon-stereogenic monohydrosilanes
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