Syntheses of five- and seven-membered ring sultam derivatives by Michael addition and Baylis–Hillman reactions
作者:Kun Tong、Jinchang Tu、Xueyong Qi、Min Wang、Yanjie Wang、Haizhen Fu、Charles U. Pittman、Aihua Zhou
DOI:10.1016/j.tet.2012.12.083
日期:2013.3
sultam derivatives were conveniently synthesized via intra- or intermolecular Michael additions and an improved vinyl sulfonamide Baylis–Hillman reaction. Two different cyclization pathways were explored for the oxa-Michael reaction. A good solvent was discovered for an otherwise sluggish ketone-type Baylis–Hillman reaction in which vinyl sulfonamide ketones were used as the precursors. Furthermore,
可通过分子内或分子间Michael加成反应和改进的乙烯基磺酰胺Baylis-Hillman反应合成五元和七元的sultam衍生物。针对氧-迈克尔反应探索了两种不同的环化途径。已发现一种良好的溶剂,用于酮反应缓慢的Baylis-Hillman反应,其中乙烯基磺酰胺酮用作前体。此外,强碱引起的乙烯基磺酰胺酮经历5-内切- trig的分子内的环化反应,这是根据Baldwin的规则不受欢迎。最终,Baylis–Hillman反应产物被用作面向多样性的sultam合成的支架。