Facile One-Pot Synthesis of Carbamoylbenzotriazoles Directly from CO2: Synthesis of Tolbutamide
作者:Roger Hunter、Ath’enkosi Msutu、Cathy Dwyer、Neville Emslie、Raymond Hunt、Barend Bezuidenhoudt
DOI:10.1055/s-0030-1261222
日期:2011.10
CO2 gas trapped with a primary or secondary amine as a carbamate salt in the presence of DBU reacts with triphenylphosphine and 1-chlorobenzotriazole (BtCl) to form a carbamoylbenzotriazole urea, which reacts with para-toluenesulfonamide under solvent-free conditions to produce N-sulfonyl ureas such as tolbutamide.
在DBU存在下,CO2气体与主要或次要胺结合形成氨基甲酸盐,然后与三苯基膦和1-氯苯并三唑(BtCl)反应,生成氨基甲酰苯并三唑尿素,该尿素在无溶剂条件下与对甲苯磺酰胺反应,生成如甲苯磺酰脲等N-磺酰脲化合物。