Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The synthesis of 1,2,3-triazolo[5,1-b]thiazole (15) and its 3-methyl- (16) and 3-phenyl- (17) derivatives is reported, together with their spectra, quaternisation, and ring opening reactions. ... Synthesis of 1,2,3-triazolo[5,1-b]thiazoles, quaternization, and reaction with electrophiles.