Solvent-free synthesis of N-sulfonyl imines using WCl6 as a novel, highly efficient and reusable catalyst
作者:Mohammad Ali Zolfigol、Mahsa Tavasoli、Ahmad Reza Moosavi-Zare、Parastoo Arghavani-Hadi、Abdolkarim Zare、Vahid Khakyzadeh
DOI:10.1039/c3ra40681d
日期:——
WCl6 was used as a novel, efficient and reusablecatalyst for the preparation of N-sulfonyl imines via the condensation of sulfonamides with aldehydes as well as isatin under solvent-free conditions. The turn-over frequency (TOF) value of the catalyst is several times higher than the previously reported catalysts. Clean reaction, simple purification, short reaction time and high yield are some other
Cyanuric chloride is an inexpensive, efficient, and mild catalyst for the synthesis of N-sulfonyl imines by the reaction of sulfonamides with aryl aldehydes at 110 degrees C under solvent-free conditions. This method affords the N-sulfonyl imines in short reaction times, under solvent-free conditions, and in high yields.