ChemInform Abstract: Synthesis of Methoxythiazolidine Fused Heterocycles.

Abstract

Synthesis of Methoxythiazolidine Fused Heterocycles. -Lewis acid mediated intramolecular cyclizations of heterocyclic mercaptoacetals (I), (III) or (V) give methoxythiazolidine fused heterocycles in good to excellent yields. -(LEE, K.-J.; JEONG, J. U.; CHOI, D. O.; KIM, S. H.; KIM, S.; PARK, H.; Bull. Korean Chem.

Thiazolo[3,2-a]benzimidazoles: Synthetic Strategies, Chemical Transformations and Biological Activities

“…The interamolecular cyclization of 1-(dimethoxyethyl)-2-mercaptobenzimidazole derivative 67 [ 57 ] by diethyl ether-boron trifluoride 68 in dry methylene chloride furnished 2,3-dihydrothiazolo[3,2- a ]benzimidazole derivative 69 ( Scheme 22 ).…”