A detailed investigation into the one-pot cascade reaction of ethyl 3,9-dimethyl-7-phenyl-6H-dibenzo-[b,d]pyran-6-one-8-carboxylate with phenylhydrazine
作者:Chao-Yue Chen、Yu Qiao、Lei Zhang、Xin Wang、Ting-Hai Yang
DOI:10.1007/s11164-020-04192-x
日期:2020.9
synthesizing cyclohexane-annulated pyrazolonesfrom a cyclohexonedicarboxylate derivative with phenylhydrazine under the catalysis of sulfuric acid in the air, up to five products were finally obtained from the one-pot procedure. Among the obtained five products derived from the reaction, two unexpected products were identified, an interesting cyclohexane-annulated pyrazolone bearing a hydroperoxide group