title: Rhodium-catalyzed addition-cyclization of hydrazines with alkynes: pyrazole synthesis via unexpected C-N bond cleavage.
abstract: Rhodium-catalyzed addition-cyclization of hydrazines with alkynes has been achieved to afford highly substituted pyrazoles under mild conditions. The cascade reaction involves two transformations: addition of the C-N bond of hydrazines to alkynes via unexpected C-N bond cleavage and intramolecular dehydration cyclization.
authors: Shanghai Key Laboratory of Functional Materials Chemistry, Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology , Meilong Road 130, Shanghai 200237, China.
authors: Deng Yuan
authors: DY
authors: Li
authors: Xiao Feng
authors: XF
authors: Mao
authors: Hao Jie
authors: HJ
authors: Chen
authors: Guo Rong
authors: GR
authors: Chen
authors: Pei Nian
authors: PN
authors: Liu