Ruthenium-Catalyzed Ester Reductions Applied to Pharmaceutical Intermediates
作者:Youssef Shaalan、Lee Boulton、Craig Jamieson
DOI:10.1021/acs.oprd.0c00410
日期:2020.11.20
Ruthenium pincer complexes were synthesized and used for catalytic esterreductions under mild conditions (∼5 bar of hydrogen). An experimental design approach was used to optimize the conditions for yield, purity, and robustness. Evidence for the catalytically active ruthenium dihydride species is presented. Observed intermediates and side products, as well as time-course data, were used to build
PROCESS FOR PREPARING PYRANO - [2,3-C]PYRIDINE DERIVITAVES
申请人:Sisko Joseph
公开号:US20130116436A1
公开(公告)日:2013-05-09
The present invention relates to a process comprising the step of dehydrating a compound of Formula (I):
with a suitable dehydrating reagent to form a compound of Formula (II):
wherein R
1
-R
7
are as defined herein.
Compounds of Formula (II) have shown promise as intermediates to compounds useful for treating bacterial infections.
Process for preparing pyrano—[2,3-C]pyridine derivatives
申请人:Sisko Joseph
公开号:US08759523B2
公开(公告)日:2014-06-24
The present invention relates to a process comprising the step of dehydrating a compound of Formula (I):
with a suitable dehydrating reagent to form a compound of Formula (II):
wherein R1-R7 are as defined herein.
Compounds of Formula (II) have shown promise as intermediates to compounds useful for treating bacterial infections.