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.