The natural phosphate and doped by potassium fluoride catalyzed Michael addition of mercaptans to chalone derivatives with high yields in few minutes and under mild reaction conditions. Products of undesirable side reactions resulting from 1,2-addition, polymerisation and bis-addition are not observed. The work-up procedure is simplified by simple filtration with the use of natural phosphate alone or doped with potassium fluoride. (C) 2002 Elsevier Science Ltd. All rights reserved.
Na2CaP2O7, a new catalyst for Michael addition
作者:Mohamed Zahouily、Younes Abrouki、Ahmed Rayadh
DOI:10.1016/s0040-4039(02)01846-4
日期:2002.10
The synthetic diphosphate Na2CaP2O7 is a new basic catalyst for Michael addition of mercaptans to chalcone derivatives with high yields in a few minutes and mild reaction conditions. Products of undesirable side reactions resulting from 1,2-addition, polymerisation and bis-addition are not observed. (C) 2002 Elsevier Science Ltd. All rights reserved.