Cobaloxime-catalyzed hydroperfluoroalkylation of electron-deficient alkenes with perfluoroalkyl halides: reaction and mechanism
作者:Changming Hu、Yaoling Qiu
DOI:10.1021/jo00038a022
日期:1992.6
Direct hydroperfluoroalkylation of electron-deficient alkenes-ethyl acrylates 4, 7, and 8, acrylonitrile (5), and methyl vinyl ketone (6)-with perfluoroalkyl halides R(f)X (1, X = I;2, X = Br) in the presence of cobaloxime(III) (3) and zinc gives 1:1 hydroperfluoroalkylation adducts in good yields. This reaction provides a convenient synthesis of beta-(perfluoroalkyl)carboxylic esters 9, 12, and 13, nitriles 10, and ketones 11. Details of the reaction including effect of solvent, temperature, and ratio of reagents were examined. The reaction is proposed to proceed via a radical mechanism initiated by low-valent cobalt.
Reactions of RfI(Ph)OSO2CF3 with alkenes and alkadienes
Metabolically Stable Apelin Analogs in the Treatment of Disease Mediated by the Apelin Receptor
申请人:INSERM (INSTITUT NATIONAL DE LA SANTÉ ET DE LA RECHERCHE MÉDICALE)
公开号:US20170355734A1
公开(公告)日:2017-12-14
The invention is related to metabolically stable apelin analogs and their use for the prevention or the treatment of diseases mediated by the apelin receptor in particular of cardiovascular disease (heart failure, hypertension, pulmonary hypertension, kidney failure) and inappropriate vasopressin secretions (SIADH).