(DHQ)<sub>2</sub>AQN-Catalyzed Asymmetric Substitution of Isatin-Derived Hydrazones with O-Boc-Protected Morita–Baylis–Hillman Adducts: A Strategy for Synthesizing Enantioenriched Azo Compounds Incorporating an Oxindole Scaffold
作者:Hai-Bin Yang、Yun-Zhou Zhao、Rui Sang、Min Shi
DOI:10.1021/jo5003246
日期:2014.4.18
The first example for the preparation of enantioenriched azo compounds from hydrazones and Morita–Baylis–Hillmanadducts has been developed, affording azo compounds incorporating an oxindole scaffold in up to 91% yield along with a 93% ee value under the catalysis of (DHQ)2AQN.