Organic Synthesis with N-Heterocyclic Carbenes of Indazole: Synthesis of Benzo(thio)imidates, Benzo[<i>d</i>][1,3]thiazines and Quinazoline-4-thiones
作者:Zong Guan、Martin Nieger、Andreas Schmidt
DOI:10.1002/ejoc.201500331
日期:2015.7
The N-heterocyclic carbenes of indazole, generated by deprotonation of indazolium salts, proved to be versatile starting materials for organic synthesis. They undergo ring-opening reactions to generate ketenimines which readily add thiols thus affording what are, to the best of our knowledge, the first examples of 2-anilinobenzothioimidates. Water converts the ring-opened intermediates into functionalized