Selective O-deallylation of dihydropyrazoles by molecular iodine in the presence of active N-allyl and formyl groups
作者:Vivek T. Humne、Kamal Hasanzadeh、Pradeep D. Lokhande
DOI:10.1007/s11164-012-0581-2
日期:2013.2
Selective O-deallylation of dihydropyrazoles has been achieved by use of iodine (10 mol%) in PEG-400 as ecofriendly solvent. Iodine (10 mol%) in dimethyl sulfoxide at 100 °C also afforded O-deallylation with aromatization compatible with highly reactive N-allyl and formyl groups. The function of iodine in the synthesis of substituted pyrazoles under different conditions is described.