[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.
Lipase immobilization on hyroxypropyl methyl cellulose support and its applications for chemo-selective synthesis of β-amino ester compounds
作者:Kirtikumar C. Badgujar、Bhalchandra M. Bhanage
DOI:10.1016/j.procbio.2016.07.008
日期:2016.10
Abstract The present study carried out the synthesis of β-amino estercompounds using lipase immobilized on hyroxypropyl methyl cellulose (HMC) support. Initially various lipases (biocatalysts) from different origin were immobilized and subsequently screened to obtain the robust biocatalyst. The lipase Pseudomonas fluorescence (PFL) immobilized on HMC was displayed highest lipase activity, protein