Synthesis of 3,4-bischloromethyl-1,2,5-thiadiazole: an unexpected chloromethylation; contrasting selectivity in dihalogenations by N-chlorosuccinimide and N-bromosuccinimide
作者:Ronald F. Cookson、Alan C. Richards
DOI:10.1039/c39740000585
日期:——
1,2,5-Thiadiazole, previously thought to be resistant to electrophilic substitution, has been shown to undergo chloromethylation; N-chlorosuccinimide is more selective than N-bromosuccinimide in the dihalogenation of 3,4-dimethyl-1,2,5-thiadiazole.
1,2,5-噻二唑,以前被认为对亲电取代具有抗性,已被证明会发生氯甲基化。在3,4-二甲基-1,2,5-噻二唑的二卤代反应中,N-氯代琥珀酰亚胺比N-溴代琥珀酰亚胺更具选择性。