Synthesis of the First Thiazolidine-Condensed Five-, Six-, and Seven-Membered Heterocycles via Cyclization of Vinylogous N-Acyliminium Ions
作者:Rade Marković、Milovan Stojanović
DOI:10.1055/s-0029-1217532
日期:2009.7
Synthesis of new thiazolidine-fused five-, six-, and seven-membered heterocycles through vinylogous N-acyliminium ion―cyclization sequence, involving positions 3 and 4 of the thiazolidine ring, is described. The formation of bicyclic products, arising by generally disfavored 5-endo-trig cyclization initiated by sulfur atom acting as a nucleophile, indicates the preparative value of this method.
描述了新的噻唑烷稠合的五元、六元和七元杂环的合成,包括噻唑烷环的 3 和 4 位的乙烯基 N-酰基胺离子环化序列。由作为亲核试剂的硫原子引发的普遍不受欢迎的 5-endo-trig 环化产生的双环产物的形成表明了该方法的制备价值。