thiols derived from the parent TADDOL, α,α,α′,α′ tetraphenyl-2,2-dimethyl-1,3-clioxolan-4,5-dimethanol, are used to prepare Cu1 complexes C and D to catalyze (0.05 equiv.) 1,4-additions of Grignard reagents RMgCl to cyclic enones with enantioselectivities which are comparable to or better than previously reported (enantiomer ratios up to 92:8).
衍生自母体TADDOL的两种简单的
硫醇α,α,α',α'四苯基-2,2-二甲基-1,3-clioxolan-4,5-二
甲醇用于制备Cu 1配合物C和D进行催化(0.05当量)
格氏试剂RMgCl向环状烯酮中添加1,4- ,其对映体选择性与先前报道的对映体相当或更好(对映体比例高达92:8)。