Gold(iii) chloride catalysed synthesis of 5-alkylidene-dihydrothiazoles
作者:Thomas S. A. Heugebaert、Leander P. D. Vervaecke、Christian V. Stevens
DOI:10.1039/c1ob05509g
日期:——
A two step synthesis of dihydrothiazoles is presented. First, the previously unknown N-propargylic dithiocarboimidates are produced in good yields from easily available, cheap starting materials. The subsequent gold catalysed ring closure is fast and efficient, leading to dihydrothiazoles through a cascade of 5-exo-dig cyclisation and 1,3-alkyl migration. The yields range from 74% to 95%.