“…A number of reliable preparative methods are known in the literature which includes cyclodehydration of carboxylic acids and b-amino alcohol, treatment of b-hydroxyamide with suitable cyclization reagents such as thionyl chloride [5], phosphorotris-(1,2,4)-triazolide [6], Mitsunobu conditions (DEAD/PPh 3 ) [7] and phosphorous mediated Appel reaction conditions [8]. In addition, thiazoline derivatives possess anti HIV-1 [9], antimitotic [10] and bioluminescent activities and have recently found applications as building blocks in pharmaceutical drug discovery [11e13]. Thiazolines have been prepared by the condensation of aminothiols with nitriles [9], esters [14], iminoethers [15] or iminotriflates [16] and also by cyclization of N-acyl-2-aminoethanols [17,18] or b-hydroxythioamides [19e21].…”