An efficient and regiospecific preparation of trifluoromethyl substituted 4-( 1<i>H</i>-pyrazol-1 -yl)-7-chloroquinolines
作者:Helio G. Bonacorso、Cleber A. Cechinel、Marli R. Oliveira、Michelle B. Costa、Marcos A. P. Martins、Nilo Zanatta、Alex F. C. Flores
DOI:10.1002/jhet.5570420604
日期:2005.9
A new series of 4-[3-alkyl(aryl)(heteroaryl)-5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-pyrazol-1-yl]-7-chloroquinolines, where [alkyl = CH3; aryl = C6H5, 4-CH3C6H4, 4-FC6H4, 4-ClC6H4, 4-BrC6H4, 4-CH3OCgH4, 4-NO2CgH4, 4-biphenyl, 1-naphthyl; heteroaryl = 2-furyl and 2-thienyl] has been regiospecifi-caly obtained from the reaction of 7-chloro-4-hydrazinoquinoline with 4-substituted-l,1,1-trifluoro-
一系列新的4- [3-烷基(芳基)(杂芳基)-5-羟基-5-三氟甲基-4,5-二氢-1 H-吡唑-1-基] -7-氯喹啉,其中[烷基= CH 3;芳= C 6 H ^ 5,4-CH 3 C ^ 6 ħ 4,4-FC 6 H ^ 4,4-CLC 6 ħ 4,4- BRC 6 ħ 4,4-CH 3 OCgH 4,4-NO 2 CGH 4,4-联苯基,1-萘基;杂芳基= 2-呋喃基和2-噻吩基]是由7-氯-4-肼基喹啉与4-取代的-1,1,1-三氟-4-甲氧基丁-3-en-2-的反应在区域上确定的。收率为61-96%。随后,在酸性条件下4,5-二氢吡喃-唑基喹啉的脱水反应在73-96中提供了一系列新的4-(3-取代的5-三氟甲基-1 H-吡唑-基-1-基)-7-氯喹啉。 % 屈服。