Stereoselective synthesis of α-disubstituted cyclopentanones by palladium-catalyzed rearrangement of allenylcyclobutanols with aryl halides
作者:Masahiro Yoshida、Kenji Sugimoto、Masataka Ihara
DOI:10.1016/s0040-4020(02)00910-9
日期:2002.9
When allenylcyclobutanols having a 1-substituted allenyl group were treated with aryl iodides in the presence of palladium(0), ring-expanded cyclopentanones possesing quaternary carbon stereocenter at the α-position were stereoselectively obtained. The reactions can be applied to various kinds of allenylcyclobutanols and aryl halides.
Cascade ring rearrangement of four-membered ring systems containing various propargylic components by a palladium catalyst is described. The reactions of cyclobutanols that have a propargylic carbonate moiety with phenols as nucleophiles produce phenoxy-induced cyclopentanones in high yields. The reactions proceed in a regio- and diastereoselective manner to afford the substituted cyclopentanones with
Oxidation of Nonactivated Anilines to Generate <i>N</i>-Aryl Nitrenoids
作者:Tianning Deng、Wrickban Mazumdar、Russell L. Ford、Navendu Jana、Ragda Izar、Donald J. Wink、Tom G. Driver
DOI:10.1021/jacs.9b13599
日期:2020.3.4
and selective C-NAr and C-C bond formation to yield spirocyclic- or bicyclic 3H-indoles or benzazepinones. Our experiments demonstrate the breadth of these oxidative processes, uncover underlying fundamental elements that control selectivity and demonstrate how the distinct reactivi-ty patterns embedded in N-aryl nitrenoid reactive intermediates can enable access to functionalized 3H-indoles or benzazepinones
Provided herein are compounds that are useful in the treatment of pain in a subject.
提供在本文件中的化合物可用于治疗主体的疼痛。
[EN] QUINOLIN-4-ONE AND 4(1H)-CINNOLINONE COMPOUNDS AND METHODS OF USING SAME<br/>[FR] COMPOSÉS DE QUINOLIN-4-ONE ET DE 4(1H)-CINNOLINONE ET PROCÉDÉS D'UTILISATION ASSOCIÉS
申请人:FREQUENCY THERAPEUTICS INC
公开号:WO2020163816A1
公开(公告)日:2020-08-13
The present disclosure relates to quinolin-4-one and 4(1H)-cinnolinone compounds and methods of using them to induce self-renewal of stem/progenitor supporting cells, including inducing the stem/progenitor cells to proliferate while maintaining, in the daughter cells, the capacity to differentiate into tissue cells.