Ureas as safe carbonyl sources for the synthesis of carbamates with deep eutectic solvents (DESs) as efficient and recyclable solvent/catalyst systems
作者:Iman Dindarloo Inaloo、Sahar Majnooni
DOI:10.1039/c8nj02624f
日期:——
synthesis of primary, N-mono- and N-disubstituted carbamates is developed from ureas. The corresponding carbamates were produced at 120 °C, within 18 h, and in the presence of a deep eutectic solvent as a recyclable catalytic system. The catalyst can be reused for several runs without any reduction in its activity. To demonstrate the utility of this approach, a wide variety of alcohols and phenols were
由尿素开发了一种简单,有效和环保的一锅法合成伯,N-单和N-二取代的氨基甲酸酯。相应的氨基甲酸酯是在120°C下,在18小时内且在深共熔溶剂作为可循环催化体系的情况下产生的。该催化剂可以重复使用几次,而不会降低其活性。为了证明这种方法的实用性,人们对各种醇和酚进行了研究,以发现中,高收率的各种氨基甲酸酯衍生物。