Palladium-Catalyzed Direct C7-Arylation of Substituted Indazoles
作者:Mohammed Naas、Saı̈d El Kazzouli、El Mokhtar Essassi、Mosto Bousmina、Gérald Guillaumet
DOI:10.1021/jo500876q
日期:2014.8.15
A novel direct C7-arylation of indazoles with iodoaryls is described using Pd(OAc)2 as catalyst, 1,10-phenanthroline as ligand, and K2CO3 as base in refluxing DMA. Direct C7-arylation of 3-substituted 1H-indazole containing an EWG on the arene ring gave the expected products in good isolated yields. In addition, a one-pot Suzuki-Miyaura/arylation procedure leading to C3,C7-diarylated indazoles has been developed.
BENCHIDMI M.; BOUCHET PH.; LAZARO R., J. HETEROCYCL. CHEM., 1979, 16, NO 8, 1599-1603
作者:BENCHIDMI M.、 BOUCHET PH.、 LAZARO R.
DOI:——
日期:——
BOUCHET P.; LAZARO R.; BENCHIDMI M.; ELGUERO J., TETRAHEDRON, 1980, 36, NO 24, 3523-3533
作者:BOUCHET P.、 LAZARO R.、 BENCHIDMI M.、 ELGUERO J.
DOI:——
日期:——
Photochimie d'heterocycles azotes—VI
作者:P. Bouchet、R. Lazaro、M. Benchidmi、J. Elguero
DOI:10.1016/0040-4020(80)88048-3
日期:1980.1
The preparation of different aminoindazoles by nucleophilic aromatic photosubstitution of nitroindazoles by amines is described. In this manner, the amino, methylamino, dimethylamino and dimethylamino substituents are introduced in 3,4,5 or 7-position. The irradiation in the presence of ethanol gives ethoxyindazoles in only four cases. Two demethylation reactions have been observed: the first one concerns