Borax as an Efficient Metal-Free Catalyst for Hetero-Michael Reactions in an Aqueous Medium
作者:Sahid Hussain、Saitanya K. Bharadwaj、Mihir K. Chaudhuri、Harjyoti Kalita
DOI:10.1002/ejoc.200600691
日期:2007.1
Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to α,β-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
硼砂是一种天然存在的材料,在水性介质中非常有效地催化硫醇、二硫醇和胺与 α,β-不饱和酮、腈、酰胺、醛和酯的共轭加成,在室温下以良好的收率提供相应的迈克尔加合物. 催化剂的再循环和反应的放大是这种催化的重要属性。硫醇和二硫醇的反应比相应的胺更容易。