A natural phosphate and doped-catalyzed Michael addition of mercaptans to α,β-unsaturated carbonyl compounds
摘要:
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.
Animal Bone Meal (ABM): A Novel Natural Catalyst for Thia-Michael Addition
作者:Yassine Riadi、Rachid Mamouni、Younes Abrouki、Mohammadine El Haddad、Nabil Saffaj、Said El Antri、Sylvain Routier、Gerald Guillaumet、Said Lazar
DOI:10.2174/157017810791112397
日期:2010.4.1
The preparation and use of Animal Bone Meal (ABM) as natural catalyst is described for C-S bond formation by thia-Michael addition. This new natural heterogeneous method led to β-sulfinyl adducts in very high yields after only a few minutes. Influence of the thiol derivatives and substitution on chalcones is discussed.
Fluorapatite: efficient catalyst for the Michael addition
作者:Mohamed Zahouily、Younes Abrouki、Ahmed Rayadh、Saı̈d Sebti、Hamid Dhimane、Marc David
DOI:10.1016/s0040-4039(03)00323-x
日期:2003.3
A Michael addition assisted by fluorapatite in heterogeneous media is described. Reaction between mercaptans and chalcone derivatives was studied at room temperature in methanol as solvent. By-products of usual undesirable reactions in Michael addition such as 1,2-addition, bis-addition and polymerisation are not observed. The yields obtained are good to excellent. (C) 2003 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.
A natural phosphate and doped-catalyzed Michael addition of mercaptans to α,β-unsaturated carbonyl compounds
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.