A Method for the Preparation of β-Amino-α,β-unsaturated Carbonyl Compounds: Study of Solvent Effect and Mechanism
作者:Reyno R. S.、Akash Sugunan、Ranganayakulu S.、Cherumuttathu H. Suresh、Goreti Rajendar
DOI:10.1021/acs.orglett.9b04531
日期:2020.2.7
An efficient method for the preparation of β-amino-α,β-unsaturated carbonyl compounds is demonstrated. Bench-stable sodium 3-oxo-enolates were prepared from carbonyl compounds, and reacted with amines in the presence of an acid and a desiccant. DFT studies revealed contrasting mechanisms toward the reactivity of aliphatic amines in protic solvents and aromatic amines in aprotic solvents. While the
证明了一种制备β-氨基-α,β-不饱和羰基化合物的有效方法。由羰基化合物制备稳定的3-氧代-烯醇钠盐,并在酸和干燥剂的存在下与胺反应。DFT研究揭示了质子溶剂中脂族胺与质子溶剂中芳族胺反应性的对比机制。前者通过形成亚胺进行,而后者通过迈克尔加成消除机理进行。