Photo- and Thermal Interconversion of Multiconfigurational Strained Hydrocarbons Exhibiting Completely Switchable Oxidation to Stable Dicationic Dyes
作者:Yusuke Ishigaki、Yuki Hayashi、Takanori Suzuki
DOI:10.1021/jacs.9b09646
日期:2019.11.13
ethylenes that undergo reversible interconversion with stable dicationic dyes. Due to severe steric repulsion, two configurational isomers (anti,anti-folded and syn,anti-folded forms) were isolated as stable entities. Photo- and thermalinterconversion of these isomers proceeded cleanly: one-way photoisomerization occurred from anti,anti- to syn,anti-form and one-way thermal isomerization was observed from
The Synthesis of Novelp-Quinone Methides:O-Dealkylation of5-(p-Alkyloxyaryl)-10,11-dihydrodibenzo[a,d]cyclohepten-5-ols and Related Compounds
作者:Benjamin Taljaard、Jana H. Taljaard、Christopher Imrie、Mino R. Caira
DOI:10.1002/ejoc.200400754
日期:2005.6
The synthesis of a series of novel tricyclic p-quinone methides (p-QMs) from 5-(p-alkyloxyaryl)-10,11-dihydrodibenzo[a,d]cyclohepten-5-ol and related substrates in moderate-to-good yields is reported. The reaction is proposed to proceed under mild acidic conditions by O-dealkylation of the p-alkoxy group on the p-position of the pendant 5-aryl ring on the B-ring of the tricyclic system.The effect of
Aluminum oxide mediated C–F bond activation in trifluoromethylated arenes
作者:O. Papaianina、K. Yu. Amsharov
DOI:10.1039/c5cc08747c
日期:——
Thermally activated γ-aluminium oxide was found to be very effective for C–F bond activation in trifluoromethylated arenes.
热活化的γ-氧化铝被发现在三氟甲基芳烃中对C-F键的活化非常有效。
Heterocyclic compounds
申请人:Novo Nordisk A/S
公开号:US05716949A1
公开(公告)日:1998-02-10
The present invention relates to novel N-substituted azaheterocyclic carboxylic acids and esters thereof in which a substituted alkyl chain forms part of the N-substituent or salts thereof, to methods for their preparation, to compositions containing them, and to their use for the clinical treatment of painful, hyperalgesic and/or inflammatory conditions in which C-fibers play a pathophysiological role by eliciting neurogenic pain or inflammation.