76139-25-8Relevant academic research and scientific papers
The Reaction between Diazoalkanes and Allylic Halides Carrying Electronegative γ-Substituents. 2. Formation and Decomposition of Dimethyl 4-(1-Bromo-1-methylethyl)-5-aryl-4,5-dihydro-3H-3,3-pyrazoledicarboxylates
Gulbrandsen, Trygve,Kolsaker, Per
, p. 196 - 202 (2007/10/02)
The title compounds were synthesized by the reaction of the proper para-substituted phenyldiazomethanes and dimethyl 2-bromo-2-methylpropylidene-malonates. p-Cyano- and p-nitrophenyldiazomethane did not give 1-pyrazolines, but decomposed at the reaction conditions.Upon thermolysis in various solvents only cyclopropanes were obtained.Only small solvent effects were observed.The kinetic data gave good linear correlation with ?+-data, with a reaction constant, ρ=-1.00.
