Synthesis of 5-alkyl-2-amino-1,3,4-thiadiazoles and α,ω-bis(2-amino-1,3,4-thiadiazol-5-yl)alkanes in ionic liquids
作者:Margarita A. Epishina、Alexander S. Kulikov、Nikolai V. Ignat’ev、Michael Schulte、Nina N. Makhova
DOI:10.1016/j.mencom.2011.11.013
日期:2011.11
Reaction of thiosemicarbazide with carboxylic acids, including N-substituted amino acids, in ionic liquids with H2SO4 as a catalyst affords 5-R-2-amino-1,3,4-thiadiazoles. On using alkanedicarboxylic acids, alpha,omega-bis(2-amino-1,3,4,-thiadiazol-5-yl)alkanes were obtained.