aza-Annulation of β-aminovinyl trifluoromethyl ketones with acryloyl chloride: an efficient synthesis of 5-(trifluoroacetyl)-3,4-dihydro-2(1H)-pyridinones
作者:Nataliya V. Lyutenko、Igor I. Gerus
DOI:10.1016/j.tetlet.2013.05.108
日期:2013.7
The first example of aza-annulation of β-aminovinyl trifluoromethyl ketones with acryloyl chloride has been studied. 5-Trifluoroacetyl-containing 3,4-dihydro-2(1H)-pyridinones 3a–j were obtained from β-substituted enaminones 2a–j, whereas β-unsubstituted enaminone 4 gave a mixture of cyclic and acyclic products.
已经研究了用丙烯酰氯对β-氨基乙烯基三氟甲基酮进行氮杂环化的第一个例子。含5-三氟乙酰基的3,4-二氢-2(1 H)-吡啶酮3a – j是从β-取代的烯胺酮2a – j获得的,而β–未取代的烯胺酮4得到了环状和无环产物的混合物。