for the following products
(4R)-(+)-4,5-dihydro-2-[2'-(diphenylphosphino)phenyl]-4-isopropyloxazole | (R)-(+)-2-[2-(Diphenylphosphino)phenyl]-4-(1-methylethyl)-4,5-dihydrooxazole | (R)-2-(2-(Diphenylphosphino)phenyl)-4-isopropyl-4,5-dihydrooxazole and (R)-(+)-2-[2-(Diphenylphosphino)phenyl]-4-isopropyl-2-oxazoline
