26452-98-2Relevant articles and documents
Investigations into the C-deuteriation of enol acetates derived from aryl alkyl ketones
Buksha, Svitlana,Coumbarides, Gregory S.,Dingjan, Marco,Eames, Jason,Suggate, Michael J.,Weerasooriya, Neluka
, p. 337 - 352 (2005)
Results are reported on the regioselective C-deuteriation of a series of enol acetates (derived from the aryl alkyl ketones) using molecular deuterium as the D-source and palladium-on-barium sulphate as the mediator. The results presented highlight potent
DMAP-based flexible polymer networks formed via Heck coupling as efficient heterogeneous organocatalysts
Xu, Wei,Xia, Wu,Guan, Yukun,Wang, Yiming,Lu, Cuifen,Yang, Guichun,Nie, Junqi,Chen, Zuxing
, p. 15 - 21 (2016/06/14)
Two DMAP-based flexible polymer networks TPB-DMAP and TPA-DMAP have been successfully synthesized via palladium catalyzed Heck cross-coupling. The structures of these polymers were confirmed by solid state 13C CP/MAS and Fourier transform infrared spectroscopy (FTIR). Although both polymers have negligible surface areas, they exhibit excellent catalytic efficiency for the acylation of 1-phenylethanol with acetic anhydride due to their good swelling capacities. Utilized as a typical catalyst, the polymer TPA-DMAP shows high activities for acylation of a variety of alcohols to the corresponding esters. Moreover, the catalyst can be recycled at least ten times without obvious loss of catalytic activity.
CAL-B-Catalyzed Enantioselective Deacetylation of Some Benzylic Acetate Derivatives Via Alcoholysis in Non-aqueous Media
Zadi, Amna,Merabet-Khelassi, Mounia,Aribi-Zouioueche, Louisa
, p. 1054 - 1061 (2015/02/05)
Enantioselective deacetylation of a set of benzylic acetates via alcoholysis catalyzed by Lipase B from Candida antarctica (CAL-B), under mild conditions is described. A systematic study allows to determine the appropriate combination nucleophile/organic solvent and also to explain the influence of these parameters on the enzymatic catalytic reaction. In all cases, (R)-alcohols are obtained with high ee (up to >99 %) at conversion 36 % 500. The enzymatic reactivity is influenced by the hydrophobicity of solvent and the structure/nature of the nucleophile. Furthermore, CAL-B allows enantio-complementary between transesterifications in non-aqueous media: alcoholysis and acetylation.