2,3-Bis(phenylsulfonyl)-1,3-butadiene: Substrate for Michael Donor/Acceptors in a Novel Synthesis of Fused Cyclopentenes
作者:Albert Padwa、S. Shaun Murphree、Zhijie Ni、Scott H. Watterson
DOI:10.1021/jo960064l
日期:1996.1.1
formed sulfone-stabilized carbanion is competitive with the intramolecular [3 + 2]-annulation process. The base-induced reaction of dimethyl 2-(methoxycarbonyl)-2-pentenedioate with the bis(phenylsulfonyl)diene was also studied. Even though the position of the acceptor moiety on the pi-bond was altered, the tandem Michael reaction sequence still occurs. The course of the reaction is dependent upon the