Several MOP ligands 5 containing aryl groups at 2' position of (R)-2-(diphe
nylphosphino)-1,1'-binaphthyl skeleton were prepared and used for palladium
-catalyzed asymmetric hydrosilylation of cyclic 1,3-dienes 6 with trichloro
silane. Highest enantioselectivity was observed in the reaction of 1,3-cycl
opentadiene (6a) catalyzed by a palladium complex (0.25 mol %) coordinated
phthyl (5f), which gave (S)-3-(trichlorosilyl)cyclopentene of 90% ee.