Synthesis of new 1,1′-carbonyl-bis[3-aryl(heteroaryl)-5-(trihalomethyl)-1H-pyrazoles] and trifluoromethyl derivatives through ring-opening reactions
作者:Helio G. Bonacorso、Cleber A. Cechinel、Liliane M. F. Porte、Jussara Navarini、Susiane Cavinatto、Ronan C. Sehnem、Demetrius B. Martins、Nilo Zanatta、Marcos A. P. Martins
DOI:10.1002/jhet.427
日期:——
Two new series of 1,1′‐carbonyl‐bis[3‐aryl(heteroaryl)‐5‐trihalomethyl‐1H‐pyrazoles], where aryl = C6H5, 4‐CH3C6H4, 4‐FC6H4, 4‐OCH3C6H4, 4‐NO2C6H4, 4,4′‐BiPh, 1‐naphthyl, and heteroaryl = 2‐thienyl and 2‐furyl have been synthesized, in a one‐pot methodology, from the reaction of 4‐methoxy‐4‐aryl(heteroaryl)‐1,1,1‐trihalobut‐3‐en‐2‐ones with 1,3‐diaminoguanidine monohydrochloride. The heterocycles were
两个新的系列的1,1'-羰基双[3-芳基(杂芳基)-5-三卤甲基-1- ħ -pyrazoles],其中芳基= C 6 H ^ 5,4-CH 3 C ^ 6 ħ 4,4-FC 6 ħ 4,4-OCH 3 C ^ 6 ħ 4,4-NO 2 C ^ 6 ħ 4,4,4'-BiPh,1-萘基和杂芳基= 2-噻吩基和2-呋喃基是通过一锅法从4-甲氧基-4-芳基(杂芳基)-1的反应合成的, 1,1-三卤代-3-烯-2-酮与1,3-二氨基胍一盐酸盐。杂环是在高选择性(62-86%)且反应时间短的情况下区域选择性获得的。还报道了与1,2-双小分子的开环反应和由吡唑基碳酰肼合成羧酸乙酯衍生物的过程。J.杂环化学。(2010)。