Photoaddition of alkyl halides to olefins catalyzed by copper(I) complexes
作者:Michiharu Mitani、Isao Kato、Kikuhiko Koyama
DOI:10.1021/ja00360a033
日期:1983.10
Photoadditions d'halogenures d'alkyle a diverses olefines en particulier Br(CH 2 ) 3 Br avec CH 2 =CHCN en presence de CuX(X=Cl, Br), n-AmBr en presence de CuCl/P(n-Bu) 3 , CH 2 Cl 2 en presence de CuCl/P(Oet) 3 . Mecanismes. Synthese de composes a liaison C-C
Photoadditions d'halogenures d'alkyle a 多种烯烃 enparticulier Br(CH 2 ) 3 Br avec CH 2 =CHCN en 存在 de CuX(X=Cl, Br), n-AmBr en 存在 de CuCl/P(n-Bu) 3,CH 2 Cl 2 存在于CuCl/P(Oet) 3 中。机制。Synthese de composes a liaison CC
Access to β‐Ketonitriles through Nickel‐Catalyzed Carbonylative Coupling of α‐Bromonitriles with Alkylzinc Reagents
作者:Aske S. Donslund、Karoline T. Neumann、Nicklas P. Corneliussen、Ebbe K. Grove、Domenique Herbstritt、Kim Daasbjerg、Troels Skrydstrup
DOI:10.1002/chem.201902206
日期:2019.7.25
Herein, we report a nickel‐catalyzed carbonylative coupling of α‐bromonitriles and alkylzinc reagents with near stoichiometric carbon monoxide to give β‐ketonitriles in good yields. The reaction is catalyzed by a readily available and stable nickel(II) pincercomplex. The developed protocol tolerates substrates bearing a variety of functional groups, which would be problematic or incompatible with
Preparation of Tetrahydropyran Derivatives with α-Electron-Withdrawing Substituents from 1,5-Dibromopentane Derivatives by Treatment with Silver Nitrate
When 1,5-dibromopentane derivatives having the electron-withdrawing groups at one terminus, which were obtained by Cu(I)-catalyzed photochemical addition of 1,3-dibromopropanes to electron-deficient olefins, were subjected to treatment with silver nitrate, tetrahydropyranderivatives with the electron-withdrawing groups at the α-position to the oxygen atom were obtained.