Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2007, Issue 2, Pages 374-378Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200600691
Keywords
borax; thiols amines; water; Michael addition
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Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to alpha,beta-unsaturated ketones, nitriles, amides, aldehydes and esters in an aqueous medium to afford the corresponding Michael adducts in good yields at room temperature. Recycling of the catalyst and scaling up of the reactions are important attributes of this catalysis. The reactions of thiols and dithiols were relatively more facile than those of the corresponding amines. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
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