Reactions of arylamines with 4-aryl-2-hydroxy-4-oxobut-2-enoic and 2-hydroxy-5,5-dimethyl-4-oxohex-2-enoic acids gave rise to 4-aryl-2-arylamino-4-oxobut-2-enoic and 2-aryl-amino-5,5-dimethyl-4-oxohex-2-enoic acids that existed in solutions as Z- and E-isomers or in a ring form as 3-arylamino-5-tert-butyl-5-hydroxyfuran-2(5H)-ones. The probable cyclization mechanism of these compounds into 5-R-3-a
芳基胺与4-芳基-2-羟基-4-氧代丁-2-烯酸和2-羟基-5,5-二甲基-4-氧己基-2-烯酸的反应产生了4-芳基-2-芳基
氨基-4 -Oxobut-2-enoic和2-芳基-
氨基-5,5-二甲基-4-Oxohex-2-enoic酸在溶液中以Z-和E-异构体形式存在或以环形式以3-芳基
氨基-5-形式存在叔丁基-5-羟基
呋喃-2(5H)-ones。考虑了这些化合物可能的环化成5-R-3-arylimino-3 H-
呋喃-2-酮衍
生物的机理。