本文介绍了一种高效,环保的合成β-氨基羰基化合物的方法。在不存在任何催化剂的情况下,通过使用无溶剂的氮杂-迈克尔加成反应,由氧杂冰片烯和胺成功地制备了氧杂冰片烯β-氨基酯和β-烯胺酯。氧杂降冰片烯β-氨基酯是室温下的主要产物,但较高的温度(例如90°C)导致形成β-烯胺酯。此外,所有目标化合物均通过IR,1 H NMR,13 C NMR和HR-MS表征。还提出了可能的反应途径。
Introduction of a clean and promising protocol for the synthesis of β-amino-acrylates and 1,4-benzoheterocycles: an emerging innovation
作者:Garima Choudhary、Rama Krishna Peddinti
DOI:10.1039/c1gc15701a
日期:——
A highly efficient, elegant and simple procedure with exceptionally mild conditions has been proposed for the synthesis of β-amino-acrylate derivatives and an array of biologically and pharmaceutically active benzoheterocycles. The protocol offers a valuable alternative to known methods and will find applications in the field of green synthesis. The regio- and stereo-chemistry of the products were established by IR, NMR and single crystal X-ray analysis.
The stereoselective formation of C–O, C–S and C–N bonds by the reaction of phenols, thiols and amines with activated alkynes is described. The reactions are successfully conducted in water with excellent yields at room temperature. The lack of organic solvent use in the work-up procedure, the short reaction time and the environmentally benign mild reaction conditions are advantages of this method.
Process for the preparation of dialkyl 2,3-pyridinedicarboxylate and derivatives thereof from an alpha, beta-unsaturated oxime and an aminobutenedioate
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0560019A1
公开(公告)日:1993-09-15
There is provided a convenient process for the preparation of commercially useful pyridinedicarboxylate compounds by the condensation of an α,β-unsaturated oxime and an aminomaleate or aminofumarate or mixtures thereof.