Decarboxylative homocoupling of (hetero)aromatic carboxylic acids
作者:Josep Cornella、Hicham Lahlali、Igor Larrosa
DOI:10.1039/c0cc01943g
日期:——
A variety of hetero(aromatic) carboxylicacids are shown to undergo decarboxylative homocoupling, mediated by a Pd/Ag system. This novel methodology for the synthesis of symmetrical biaryls avoids the use of haloarenes and organometallic compounds as starting materials.
Palladium(II)-Catalyzed Coupling of Electron-Deficient Arenes via C–H Activation
作者:Lihong Zhou、Wenjun Lu
DOI:10.1021/om300114e
日期:2012.3.26
Homocoupling and cross-coupling of electron-deficient arenes, including nitrobenzene, (trifluoromethyl)benzene, ethyl benzoate, etc., have been developed to afford biaryls using a catalytic system of Pd(OAc)(2)/trifluoroacetic acid (TFA)/O-2 or K2S2O8. The crucial step is to tune the concentrations of arenes and the loading of TFA carefully to enhance the reaction rates and the selectivity of these couplings involving dual C-H activation.
van Alphen, Recueil des Travaux Chimiques des Pays-Bas, 1932, vol. 51, p. 453,457
作者:van Alphen
DOI:——
日期:——
Mascarelli; Gatti, Gazzetta Chimica Italiana, 1933, vol. 63, p. 654,656
作者:Mascarelli、Gatti
DOI:——
日期:——
Mascarelli; Gatti, Gazzetta Chimica Italiana, 1933, vol. 63, p. 354,658