Synthesis of stilbene analogues by one-pot oxidation-Wittig and oxidation-Wittig–Heck reaction
作者:Akeel S. Saiyed、Krupa N. Patel、Bola V. Kamath、Ashutosh V. Bedekar
DOI:10.1016/j.tetlet.2012.06.090
日期:2012.8
Synthesis of symmetrical (and unsymmetrical) stilbene derivatives is achieved by a combination of one-pot steps of Kornblum type oxidation of benzyl halide, its simultaneous in situ formation of phosphonium salt, and subsequently their Wittig reaction. In other variant it is oxidized to aldehyde, treated with ylide generated from phosphonium salt (CH3PPh3X) to give styrene, and subjected to Pd catalyzed
A Deacetylation-Diazotation-Coupling Sequence: Palladium- Catalyzed CC Bond Formation with Acetanilides as Formal Leaving Groups
作者:Bernd Schmidt、René Berger
DOI:10.1002/adsc.201200929
日期:2013.2.1
Acetanilides can be deacetylated and diazotized in situ, and subsequently used in Pd-catalyzed coupling reactions without isolation of the diazonium intermediate. Heck reactions, Suzuki cross-coupling reactions, and a Pd-catalyzed [2+2+1] cycloaddition have been investigated as terminating CC bond-forming steps of this one-flask sequence. The sequence does not require the exchange of solvents or removal
Microwave-Assisted Wittig Reaction of Semistabilized Nitro-Substituted Benzyltriphenyl-Phosphorous Ylides with Aldehydes in Phase-Transfer Conditions
作者:Tiago Rodrigues、Francisca Lopes、Rui Moreira
DOI:10.1080/00397911.2010.530378
日期:2012.3.1
Abstract We report here a simple entry into the nitrostilbene system in very short reaction times and good yields using the microwave-assisted Wittigreaction in phase-transfer conditions of nitro-substituted benzyltriphenylphosphonium ylides with aldehydes. GRAPHICAL ABSTRACT
Novel enolamides, process for their manufacture and pharmaceutical compositions thereof with an activity as modulators of the arachidonic acid cascade
申请人:WARNER-LAMBERT COMPANY
公开号:EP0221345A1
公开(公告)日:1987-05-13
The present invention relates to novel enolamide type compounds, pharmaceutical compositions, and methods of use thereof, useful in the treatment of diseases in which products of lipoxygenase enzyme activity or the action of leukotrienes contribute to the pathological condition.