Green, efficient and practical Michael addition of arylamines to α,β-unsaturated ketones
作者:Ran Jiang、Dan-Hua Li、Jing Jiang、Xiao-Ping Xu、Tao Chen、Shun-Jun Ji
DOI:10.1016/j.tet.2011.03.082
日期:2011.5
The aza-Michael addition of aromatic amines to alpha,beta-unsaturated ketones was carried out effectively at room temperature in good to excellent yields without any catalyst or solvent. It was significant that part of adducts could be collected in almost quantitative yield without column chromatography. This procedure offered a green, efficient, and practical approach for the synthesis of beta-amino ketones. (C) 2011 Elsevier Ltd. All rights reserved.
[HP(HNCH2CH2)3N]NO3: an efficient homogeneous and solid-supported promoter for aza and thia-Michael reactions and for Strecker reactions
作者:Brandon M. Fetterly、Nirmal K. Jana、John G. Verkade
DOI:10.1016/j.tet.2005.09.117
日期:2006.1
In the presence of a catalytic amount of an azaphosphatrane nitrate salt, amines and thiols react readily with Michael acceptors. The salt is also an efficient promoter for the one pot synthesis of alpha-amino and alpha-amidonitriles. By anchoring the salt to Merrifield Resin, a reusable heterogeneous catalyst is obtained for these reactions. Evidence is presented for catalysis being attributable solely to the NO3- ion. (c) 2005 Elsevier Ltd. All rights reserved.