Synthesis of N-haloacyl and N-hetarylthioacyl derivatives of 2-amino-5-aryl-6H-1,3,4-thiadiazine
作者:L. B. Kulikova、G. I. Ezhova、N. E. Kravchenko、O. V. Dorofeeva、A. S. Kulikov、A. G. Zavozin
DOI:10.1007/s11172-007-0255-1
日期:2007.8
Conditions for N-acylation of 2-amino-5-aryl-6H-1,3,4-thiadiazines with trifluoroacetic anhydride and halogen-substituted carboxylic acid halides with retention of the initial heterocyclic system were found. 5-Aryl-2-haloacylamino-6H-1,3,4-thiadiazines were obtained in preparative yields. Their reactions with hetarenethiols afforded N-hetarylthioacyl derivatives.