A convergentpairedelectrolysis catalyzed by a B12 complex for the one-pot synthesis of a tertiary amide from organic trichlorides (R-CCl3) has been developed. Various readily available organic trichlorides, such as benzotrichloride and its derivatives, chloroform, dichlorodiphenyltrichloroethane (DDT), trichloro-2,2,2-trifluoroethane (CFC-113a), and trichloroacetonitrile (CNCCl3), were converted
[reaction: see text] Reaction of carbamoyl chlorides with cyano-Gilman cuprates affords tertiary amides in good to excellent yields. The reaction is general due to the possibility of using reagents made either from organolithium or from Grignard compounds. The characterization of the main side products allowed for the suggestion of a possible mechanism.
ienyl)bis(ethene)cobalt yield the corresponding (η5-pentamethylcyclopentadienyl)(η4-cyclobutadiene)cobalt complexes 2a–c. Treatment of 1-phenylthio-2-diethylaminoacetylene 1b with three equivalents of CpCo(CO)2 leads to the 1,3-dicobalta-bicyclobutane derivative 3′b. The analogous compound 3′d and the trinuclear cobalt complex 4′d are obtained from the reaction of bis(diethylamino)acetylene (1d) with
Divers halogenures d'aryles sont convertis catalytiquement en α-cetoamides et amides par traitement avec des amines secondaires et le monoxyde de carbone
Divershalures d'aryles sont convertis catalytiquement en α-cetoamides et amides par traitement avec des amines secondaires et le monooxyde de carbone
Oxalsäurederivate durch oxidative kupplung von kohlenmonoxid an nickel
作者:Heinz Hoberg、F. Javier Fañanás、Hans Josef RiegeI
DOI:10.1016/s0022-328x(00)99113-7
日期:1983.9
Carbon monoxide is oxidatively coupled by ligand nickel(II) compounds with secondary, primary amines and with alkali alkoxides to give oxalic acid derivatives. In the case of secondary amines the CO coupling can be run catalytically by adding oxidants like copper(II) salts. The yield of oxalic esters depends on the types of ligands and anions.