112085-16-2Relevant academic research and scientific papers
FUSED THIAZOLES FROM 3-AMINO-THIAZOLINE-2-THIONES: SYNTHESIS OF PYRAZOLOTHIAZOLE AND THIAZOLO-1,3,4-THIADIAZINE DERIVATIVES
Molina, Pedro,Argues, Antonio,Velasco, Maria de los Desamparados,Villalgordo, Jose Manuel
, p. 1323 - 1332 (2007/10/02)
Two approaches for the preparation of a number of pyrazolothiazoles are reported.The first involves reaction of 3-amino-4-phenyl-thiazoline-2-thione 1 with phenacyl bromides to give thiazolo-1,3,4-thiadiazines 2 which by action of triethylamine are converted into the pyrazolothiazoles 4.The second is based on the reaction of 3-amino-2-methylthio-4-phenylthiazolium cation 5 with activated acetonitriles to give 7-substituted 6-amino-3-phenylpyrazolothiazoles 7.
