110108-66-2Relevant academic research and scientific papers
SYNTHESIS OF 2H-PYRAZOLOPYRIDINES FROM 1,1,2,2-TETRACYANOCYCLOPROPANES
Takahashi, Masahiko,Orihara, Toshiaki,Sasaki, Takanori,Yamatera, Tetsuya,Yamazaki, Ken'ichi,Yoshida, Atomi
, p. 2857 - 2862 (2007/10/02)
Reaction of 3-substituted 1,1,2,2-tetracyanocyclopropanes (1) with phenylhydrazine proceeded through the formation of pyrazole-4-spirocyclopropanes (4) followed by the ring opening of the cyclopropane ring to give 4-vinylpyrazoles (5), from which 2H-pyraz
