Semenova, S. N.; El Sadani, S. K.; Karavan, V. S., Journal of Organic Chemistry USSR (English Translation), 1981, p. 864 - 867
作者:Semenova, S. N.、El Sadani, S. K.、Karavan, V. S.、Temnikova T. I.
DOI:——
日期:——
Mannich Bases as Synthetic Intermediates: Synthesis of 3- and 4-Functionalized 2-Pyrazolines
作者:Elsayed M. Afsah、Ez-el-Din M. Kandeel、Mona M. Khalifa、Waleed M. Hammouda
DOI:10.1515/znb-2007-0409
日期:2007.4.1
The reaction of styryl ketonic Mannich bases 2a - c with phenylhydrazine leads to 3-functionalized 2-pyrazolines 4 or 6 depending on the reaction conditions. 3-[β -(Arylamino)ethyl]-2-pyrazolines 8a,b were obtained via transamination between the methiodide salt 7 and primary arylamines. Treatment of 1-(p-anisyl)-1,2,5-tri(N-piperidino)pentan-3-one (11) with phenylhydrazine affords the 3,4-difunctionalized