Imidazolium-supported benzotriazole: an efficient and recoverable activating reagent for amide, ester and thioester bond formation in water
作者:S. M. Abdul Shakoor、Sunita Choudhary、Kiran Bajaj、Manoj Kumar Muthyala、Anil Kumar、Rajeev Sakhuja
DOI:10.1039/c5ra18749d
日期:——
An efficient and recyclable imidazolium-supported benzotriazole reagent (Im-CH2-BtH) as a novel synthetic auxiliary has been synthesized and its utility as a carboxyl group activating reagent via the formation of stable imidazolium-supported acyl benzotriazoles was explored for the synthesis of amides, esters and thioesters in water under microwave conditions. The reagent was reused five times without
合成了一种高效且可循环利用的咪唑鎓负载的苯并三唑试剂(Im-CH 2 -BtH)作为新型合成助剂,并探索了其通过形成稳定的咪唑鎓负载的酰基苯并三唑而用作羧基活化剂的合成方法。微波条件下的水中的酰胺,酯和硫代酯。试剂重复使用了五次,活性没有明显下降。它对水分不敏感,在热和有氧条件下都非常稳定。咪唑鎓负载的N-乙酰基苯并三唑的应用导致在绿色条件下以克级合成对乙酰氨基酚,收率为93%。