作者:Jérôme Boëlle、Raphaël Schneider、Philippe Gérardin、Bernard Loubinoux
DOI:10.1055/s-1997-1360
日期:1997.12
Reaction of the ethylene acetals of β-nitroenones 3 with isocyano-acetates followed by acidic hydrolysis allowed the synthesis of 3-alkanoylpyrrole-2-carboxylates 9a-f and 7-oxo-4,5,6,7-tetrahydro-2H-isoindole-1-carboxylates 9g-i in good yield. 3-Alkanoyl-4-nitropyrroles 11a,b were obtained using 3 and tosylmethyl isocyanide.
δ-硝基烯酮 3 的乙烯乙醛与异氰酸醋酸酯反应,然后进行酸性水解,可以合成 3-烷酰基吡咯-2-羧酸酯 9a-f 和 7-氧代-4,5,6,7-四氢-2H-异吲哚-1-羧酸酯 9g-i,收率很高。使用 3 和对甲苯基甲基异氰酸酯可得到 3-烷酰基-4-硝基吡咯 11a、b。