Etude expérimentale et théorique de la photolyse de dérivés du cycle pyrazolone
作者:H Cardy、E Poquet
DOI:10.1016/s0040-4020(01)97985-2
日期:1981.1
When irradiated in protic solvents such as water and primary alcohols, pyrazolinone derivatives undergo photocleavage between the two nitrogen atoms. Substituting the C-4 atom with an electronegative group stabilizes the open chain which is obtained but a thermal transposition takes place from the linear intermediate when C-4 carries a hydrogen atom or a methyl group. The abinitio scheme was used to