Utilization of carbon disulfide as a powerful building block for the synthesis of 2-aminobenzoxazoles
作者:Tirumaleswararao Guntreddi、Bharat Kumar Allam、Krishna Nand Singh
DOI:10.1039/c3ra41189c
日期:——
This protocol describes a novel, mild and convenient route to afford 2-aminobenzoxazoles in high yields, and represents a significant advance towards an environmentally friendly strategy. Aliphatic amines are made to react with carbon disulfide to provide intermediate dithiocarbamates (DTC), which in the presence of 2-aminophenol, subsequently undergo successive intermolecular nucleophilic attack and desulfurization to produce 2-aminobenzoxazoles within 3 h.
此协议描述了一条新颖、温和且便捷的途径,能够在高产率下制备2-氨基苯并噁唑,标志着向环境友好型策略迈出了重要的一步。脂肪族胺与二硫化碳反应生成中间体二硫代氨基甲酸盐(DTC),在2-氨基苯酚的存在下,这些中间体随后经历连续的分子间亲核攻击和脱硫反应,在3小时内即可生成2-氨基苯并噁唑。