Synergic Effects of Ionic Liquid and Microwave Irradiation in Promoting Trifluoromethylpyrazole Synthesis
作者:Lilian Buriol、Clarissa P. Frizzo、Liziê D. T. Prola、Dayse N. Moreira、Mara R. B. Marzari、Elisandra Scapin、Nilo Zanatta、Helio G. Bonacorso、Marcos A. P. Martins
DOI:10.1007/s10562-011-0571-9
日期:2011.8
The synthesis of 5-trifluoromethyl-1-phenyl-1H-pyrazoles from the reactions of 4-alkoxy-1,1,1-trifluoro-3-alken-2-ones [CF3C(O)CH=C(R-1)OR, where R = Me, Et; R-1 = H, Me, Bu, i-Bu, Ph, 4-MeC6H4, 4-FC6H4, 4-ClC6H4, 4-BrC6H4, 4-IC6H4, fur-2-yl] with phenyl hydrazine in the presence of ionic liquid [BMIM][BF4] is reported. Synergic effects of ionic liquid and microwave irradiation in promoting pyrazole synthesis have been shown for the first time.