Regioselective Synthesis of Stable 2-(Trifluoromethyl)-2,3-dihydro-1H-pyrrol-2-ols and Derived Fluorinated Heterocycles
作者:Orazio A. Attanasi、Paolino Filippone、Barbara Guidi、Fabio Mantellini、Stefania Santeusanio
DOI:10.1055/s-2001-17510
日期:——
1-aminopyrrole derivatives in good to excellent yields. The reaction of 2(trifluoromethyl)-2,3-dihydro-1H-pyrrol-2-ol derivative with 2-haloketone affords fluorinated furo[2,3-b]pyrroline derivative, while that of diethyl 1-[(anilinocarbonyl)amino]-2-methyl-5-(trifluoromethyl)-1H-pyrrole-3,4-dicarboxylate with hydrazine hydrate affords fluorinated pyrrolo[3,4-d]pyridazindione derivative.
Synthesis 2001, No. 12, 25 09 2001。文章标识符:1437-210X,E;2001,0,12,1837,1845,ftx,en;E03501ss.pdf。© Georg Thieme Verlag Stuttgart · 纽约 ISSN 0039-7881 摘要:1,2-二氮杂-1,3-丁二烯与三氟甲基化的 b-二羰基化合物区域选择性反应生成稳定的 2-(三氟甲基)-2,3-二氢-1H- pyrrol-2-ol 衍生物,在用三氟甲磺酸酐或非均相催化剂处理后,以良好至优异的产率产生氟化 1-氨基吡咯衍生物。2(三氟甲基)-2,3-二氢-1H-吡咯-2-醇衍生物与2-卤代酮反应得到氟化呋喃[2,3-b]吡咯啉衍生物,而二乙基1-[(苯胺羰基)氨基]-2-methyl-5-(trifluoromethyl)-1H-pyrrole-3,4-dicarboxylate