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Palladium-catalyzed asymmetric allylations of chiral enamines bearing phosphine functionality. Effects of anionic counterparts of allylating reagents on asymmetric induction

โœ Scribed by Kunio Hiroi; Jun Abe

Book ID
104226546
Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
282 KB
Volume
31
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Palladium-catalyzed asymmetric allylations of chiral enamines bearing a phosphine group were attempted using various allylating reagents to produce optically active a-ally1 carbonyl compounds. The great effects of the anionic counterparts of the allylating reagents on asymmetric induction were observed.

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Optically active Cr-complexed imineยฑphosphine hybrid ligands having only a planar chirality showed excellent enantioselectivity for the palladium-catalyzed allylic alkylation with predictable absolute conยฎguration.