Synthesis and Intramolecular Cyclization of N-Substituted 2-Amino-4-aryl-4-oxo-2-butenoic Acids
摘要:
Treating 4-aryl-2,4-dioxobutanoic acids with aromatic amines, 4-aminoantipyrine, and benzophenone hydrazone furnished N-substituted 2-amino-4-aryl-4-oxo-2-butenoic acids that existed in solutions in enaminoketone and iminoketone forms. The acids obtained underwent in the presence of acetic anhydride cyclization into N-substituted 5-aryl-3-imino-3H-furan-2-ones.
Kozlov, A. P.; Ryabova, V. V.; Andreichikov, Yu. S., Journal of Organic Chemistry USSR (English Translation), 1987, vol. 23, # 8, p. 1492 - 1497
作者:Kozlov, A. P.、Ryabova, V. V.、Andreichikov, Yu. S.
DOI:——
日期:——
Synthesis and Intramolecular Cyclization of N-Substituted 2-Amino-4-aryl-4-oxo-2-butenoic Acids
作者:A. E. Rubtsov、V. V. Zalesov
DOI:10.1023/b:rujo.0000003167.28537.71
日期:2003.6
Treating 4-aryl-2,4-dioxobutanoic acids with aromatic amines, 4-aminoantipyrine, and benzophenone hydrazone furnished N-substituted 2-amino-4-aryl-4-oxo-2-butenoic acids that existed in solutions in enaminoketone and iminoketone forms. The acids obtained underwent in the presence of acetic anhydride cyclization into N-substituted 5-aryl-3-imino-3H-furan-2-ones.