One pot spiropyrazoline synthesis via intramolecular cyclization/methylation
作者:Sureshbabu Dadiboyena、Ashton T. Hamme
DOI:10.1016/j.tetlet.2011.03.004
日期:2011.5
synthesized through a tandem intramolecular cyclization/methylation reaction of a functionalized 5,5-disubstituted pyrazoline in one reaction vessel. The 5,5-pyrazolines were constructed through a 1,3-dipolarcycloaddition reaction of aromatic ring containing nitrile imines and a disubstituted geminal alkene. An evaluation of the relative location of the nucleophilic and electrophilic functional groups