在金属前体[IrC1(cOD)]2,1,2-双(二苯基膦)乙烷(dppe)和碳酸铯的催化下,用异丙醇做氢源时,含卤素或杂环的理,β-不饱和酮可以选择性地发生1,4-还原得到饱和酮,产率高达90%。反应中未出现卤素被还原和催化剂中毒的现象。
The a,β-unsaturated ketones containing halogen or heterocycle could be reduced to the corresponding saturated ketones in the presence of metal precursor 1,2-bis (diphenylphosphino) ethane ( dppe ) and Cs2 CO3 employing isopropanol as All the transformation proceeded smoothly and the halogen kept untouched, and the to 90%. chemoselectively [ IrC1 (COD) ]2, hydrogen source. yield reached up