Copper(I) thiolate complexes derived from chiral mercaptophenyl-oxazolines 3 have been studied as enantioselective catalysts for the 1,4-addition of Grignard reagents to α,β-unsaturated ketones. For cyclic enones enantioselectivities increase in the sequence cyclopentenone (16–37% ee) < cyclohexenone (60–72 % ee) < cycloheptenone (83–87% ee).
已经研究了衍生自手性巯基苯基-
恶唑啉3的
硫醇
铜(I)络合物,作为
格氏试剂1,4-加成到α,β-不饱和酮上的对映选择性催化剂。对于环状烯酮,对映体选择性按顺序依次增加:
环戊烯酮(16–37%ee)<环己烯酮(60–72%ee)<
环庚烯酮(83–87%ee)。