A 3-component domino reaction approach between a primary amine, a dialkyl acetylenedicarboxylate, and 2-oxo-2- phenylacetaldehyde that affords novel alkyl 2-benzoyl-4-alkylamino- 5-oxo-2,5-dihydro-3-furan carboxylate derivatives is reported. The reaction sequence consists of an initial Michael addition of primary amines to dialkyl acetylenedicarboxylates, followed by an aldol-like reaction with 2-oxo-2-phenylacetaldehyde, and then \gamma -lactonization to afford the products. This cascade reaction sequence represents a rapid and unprecedented route to the described biologically interesting molecules.
伯胺、
乙炔二
甲酸二烷基酯和2-氧代-2-
苯乙醛之间的三组分多米诺反应方法,提供新型2-苯甲酰基-4-烷基
氨基-5-氧代-2,5-二氢-3-
呋喃甲酸烷基酯衍生品已被报道。 反应顺序包括
伯胺与
乙炔二
甲酸二烷基酯的初始迈克尔加成,随后与2-氧代-2-
苯乙醛进行类羟醛反应,然后γ-内酯化得到产物。 这种级联反应序列代表了获得所描述的具有
生物学意义的分子的快速且前所未有的途径。