title: Facile palladium-catalysed synthesis of 1-aryl-1H-indazoles from 2-bromobenzaldehydes and arylhydrazines.
abstract: 2-Bromobenzaldehydes react with arylhydrazines in toluene at 100 [degree]C in the presence of a catalytic amount of a palladium catalyst and phosphorus chelating ligands such as 1,1[prime or minute]-bis(diphenylphosphino)ferrocene and 1,3-bis(diphenylphosphino)propane along with NaO-t-Bu to afford 1-aryl-1H-indazoles in good yields.
authors.affiliation: Research Institute of Industrial Technology, Kyungpook National University, Daegu 702-701, Korea.
authors.forename: Chan Sik
authors.initials: CS
authors.lastname: Cho
authors.forename: Dong Kwon
authors.initials: DK
authors.lastname: Lim
authors.forename: Nam Ho
authors.initials: NH
authors.lastname: Heo
authors.forename: Tae-Jeong
authors.initials: TJ
authors.lastname: Kim
authors.forename: Sang Chul
authors.initials: SC
authors.lastname: Shim