13361-40-5Relevant academic research and scientific papers
Visible-Light-Induced Meerwein Cascade Reactions for the Preparation of α-Aryl Esters
Niu, Teng-Fei,Li, Liang,Ni, Bang-Qing,Bu, Mei-Jie,Cai, Chun,Jiang, Hui-Liang
, p. 5775 - 5780 (2015)
A practical strategy has been developed for preparation of α-aryl ester derivatives by using a visible-light-induced Meerwein cascade reaction. This method uses molecular oxygen as an oxidant at room temperature without the need of hazardous reagents or harsh reaction conditions and provides a straightforward approach to pharmaceutically and synthetically useful α-aryl esters in moderate to good yields from simple and readily available starting materials. Oxindoles were also prepared by this protocol. A new strategy for the synthesis of α-aryl esters has been reported. This protocol utilizes acrylonitrile as a "bridge molecule" to combine a visible-light-induced Meerwein reaction and a hydrolysis reaction to generate α-aryl esters. This method was also employed for the preparation of oxindoles.
Chemoselective hydrogenation using molecular sieves-supported Pd catalysts: Pd/MS3A and Pd/MS5A
Takahashi, Tohru,Yoshimura, Masatoshi,Suzuka, Hiroyasu,Maegawa, Tomohiro,Sawama, Yoshinari,Monguchi, Yasunari,Sajiki, Hironao
experimental part, p. 8293 - 8299 (2012/09/21)
Palladium catalysts embedded on molecular sieves (MS3A and MS5A) were prepared by the adsorption of Pd(OAc)2 onto molecular sieves with its in situ reduction to Pd0 by MeOH as a reducing agent and solvent. 0.5% Pd/MS3A and 0.5% Pd/MS5A catalyzed the hydrogenation of alkynes, alkenes, and azides with a variety of coexisting reducible functionalities, such as nitro group, intact. It is noteworthy that terminal alkenes of styrene derivatives possessing electron-donating functionalities on the benzene nucleus were never hydrogenated under 0.5% Pd/MS5A-catalyzed conditions, while internal alkenes of 1-propenylbenzene derivatives were readily reduced to the corresponding alkanes.
Development of molecular sieves-supported palladium catalyst and chemoselective hydrogenation of unsaturated bonds in the presence of nitro groups
Maegawa, Tomohiro,Takahashi, Tohru,Yoshimura, Masatoshi,Suzuka, Hiroyasu,Monguchi, Yasunari,Sajiki, Hironao
supporting information; experimental part, p. 2091 - 2095 (2009/12/26)
The chemoselective hydrogenation of unsaturated bonds and azide functionalities is achieved in the presence of nitro groups by a heterogeneous palladium catalyst supported on molecular sieves (MS3A). The present method shows a widerange of applicability with regard to substrates and the catalyst can be easily prepared and reused at least three times without any loss of activity.
