Triazolylbenzimidazolthiones and derivatives of the new 1,2,3-triazolo[ 1,5-a][ 1,3,5]benzotriazepine heterocycle

4-(Benzo[d]thiazol-2-yl)-1-(2-nitrophenyl)-1H-1,2,3-triazol-5-amine

The protocol for the reaction of 2-nitrophenyl azide with 2-(benzo[d]thiazol-2-yl)acetonitrile has been selected. It was found that an optimal condition under which the target 4-(benzo[d]thiazol-2-yl)-1-(2-nitrophenyl)-1H-1,2,3-triazol-5-amine could be formed in good yield is the triethylamine system as a base in the DMF solution. The synthesized triazole is promising both for the evaluation of its antiproliferative properties and for the study of the path to new ring annulation by transforming nitro and amino groups.

A fully automated, multistep flow synthesis of 5-amino-4-cyano-1,2,3-triazoles

Having demonstrated in the preceding publication the flow synthesis of aryl azides, we describe here a general protocol for the in-line purification of these versatile intermediates. As part of this investigation, we evaluated the use of ReactIR 45m as a tool for real-time detection of hazardous azide contaminants. This azide synthesis and purification process was then incorporated into a multistep flow sequence to generate a small collection of 5-amino-4-cyano-1,2,3-triazoles directly from aniline starting materials in a fully automated fashion.