Solvent-free transesterification in a ball-mill over alumina surface
摘要:
An efficient procedure for transesterification has been developed in a ball-mill in the absence of any solvent, acid/base or metal catalyst. A variety of methyl, ethyl, allyl esters have been transesterified to higher benzyl and other esters in high yields by this procedure. (C) 2012 Elsevier Ltd. All rights reserved.
The invention is directed to compounds having the formula:
wherein: Ar, r, Y, Z, Q, W, X, and R
5-7
are as defined in the specification, and pharmaceutically acceptable salts thereof. These compounds have AT
1
receptor antagonist activity and neprilysin inhibition activity. The invention is also directed to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.
Solvent-free transesterification in a ball-mill over alumina surface
作者:Tanmay Chatterjee、Debasree Saha、Brindaban C. Ranu
DOI:10.1016/j.tetlet.2012.05.127
日期:2012.8
An efficient procedure for transesterification has been developed in a ball-mill in the absence of any solvent, acid/base or metal catalyst. A variety of methyl, ethyl, allyl esters have been transesterified to higher benzyl and other esters in high yields by this procedure. (C) 2012 Elsevier Ltd. All rights reserved.