Conversion of Primary Alcohols and Butadiene to Branched Ketones via Merged Transfer Hydrogenative Carbonyl Addition–Redox Isomerization Catalyzed by Rhodium
作者:Brian J. Spinello、Jessica Wu、Yoon Cho、Michael J. Krische
DOI:10.1021/jacs.1c07230
日期:2021.9.1
The first examples of rhodium-catalyzed carbonyl addition via hydrogen autotransfer are described, as illustrated in tandem butadiene-mediated carbonyl addition–redox isomerizations that directly convert primary alcohols to isobutyl ketones. Related reductive coupling–redox isomerizations of aldehyde reactants mediated by sodium formate also are reported. A double-labeling crossover experiment reveals
(Methylsulfonyl)phenyl-2-(5H)-furanones as COX-2 inhibitors
申请人:Merck Frosst Canada, Inc.
公开号:US05981576A1
公开(公告)日:1999-11-09
The invention encompasses the novel compound of Formula A that is useful in the treatment of cyclooxygenase-2 mediated diseases. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula A.