Diastereoselective multicomponent synthesis of (4RS,6SR)-4,6-diaryl-5,5-dicyano-2-methyl-1,4,5,6-tetrahydropyridine-3-carboxylates
作者:A. N. Vereshchagin、K. A. Karpenko、T. M. Iliyasov、M. N. Elinson、E. O. Dorofeeva、A. N. Fakhrutdinov、M. P. Egorov
DOI:10.1007/s11172-018-2327-9
日期:2018.11
Multicomponent reaction of benzylidenemalononitrile, 2-acetyl-3-arylacrylates, and aqueous ammonia in alcohols at room temperature proceeds stereoselectively to give (4RS,6SR)-4,6-diaryl-5,5-dicyano-2-methyl-1,4,5,6-tetrahydropyridine-3-carboxylates in 55–87% yields. In this reaction, ammonia acts as both the catalyst and the source of nitrogen for constructing tetrahydropyridine cycle.
Sequential acetalization-pyrolysis of .alpha.-acetylcinnamates and .alpha.-acetylbenzalacetones. A method for the generation of 2-carbonyl-substituted naphthalenes