Method for asymmetric hydrosilylation of ketones

Details Method for asymmetric hydrosilylation of ketones Method for asymmetric hydrosilylation of ketones

B - Operations, Transporting

01

J

B01J 31/24 (2006.01) B01J 31/18 (2006.01) C07C 29/145 (2006.01)

Patent

CA 2598383

Method of asymmetrically hydrosilylating substrates using catalysts having a ligand of the compound of the formula (I) wherein R is optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; R' is hydrogen, optionally substituted lower alkyl; and R'' is hydrogen, halogen, optionally substituted alkyl, hydroxy, amino (e.g., primary, secondary or tertiary), alkenyl; or an enantiomer thereof; or an enantiomeric mixture thereof with a transition metal. Particularly suitable reactions include the asymmetric hydrosilylation of ketones.

La présente invention a trait à un procédé pour l'hydrosilylation asymétrique de substrats à l'aide de catalyseurs comprenant un ligand du composé de formule (I), dans lequel R est alkyle éventuellement substitué, cycloalkyle, aryle ou hétéroaryle; R' est hydrogène, alkyle inférieur éventuellement substitué; et R" est hydrogène, halogène, alkyle éventuellement substitué, hydroxy, amino (par exemple, primaire, secondaire ou tertiaire), alcényle; ou un énantiomère de celui-ci; ou un mélange énantiomérique de celui-ci avec un métal de transition. Des réactions particulièrement appropriées comprennent l'hydrosylilation asymétrique de cétones.

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