Unexpected results from the re-investigation of the Beckmann rearrangement of ketoximes into amides by using TsCl
作者:Hong-Jun Pi、Jin-Dong Dong、Na An、Wenting Du、Wei-Ping Deng
DOI:10.1016/j.tet.2009.07.036
日期:2009.9
commercially available organosulfonyl chloride, has been widely used as a stoichiometric dehydrogenation reagent in the transformation of ketoximes into corresponding amides via the Beckmann rearrangement. It has been now found to catalyze the Beckmann rearrangement with high catalytic efficiency, converting a wide range of ketoximes into their corresponding amides under mild condition with good to
TsCl(对甲苯磺酰氯),一种可商购的有机磺酰氯,已被广泛用作通过贝克曼重排将酮肟转化为相应酰胺的化学计量脱氢试剂。现已发现,它能以高催化效率催化贝克曼重排,在温和的条件下以良好至极好的收率将多种酮肟转化为相应的酰胺(在催化剂负载量为1-5 mol%时,收率可达99%) 。