2-(2-(Dimethylamino)vinyl)-4H-pyran-4-ones as Novel and Convenient Building-Blocks for the Synthesis of Conjugated 4-Pyrone Derivatives
作者:Dmitrii L. Obydennov、Diana I. Nigamatova、Alexander S. Shirinkin、Oleg E. Melnikov、Vladislav V. Fedin、Sergey A. Usachev、Alena E. Simbirtseva、Mikhail Y. Kornev、Vyacheslav Y. Sosnovskikh
DOI:10.3390/molecules27248996
日期:——
A straightforward approach for the construction of the new class of conjugated pyrans based on enamination of 2-methyl-4-pyrones with DMF-DMA was developed. 2-(2-(Dimethylamino)vinyl)-4-pyrones are highly reactive substrates that undergo 1,6-conjugate addition/elimination or 1,3-dipolar cycloaddition/elimination followed by substitution of the dimethylamino group without ring opening. This strategy
基于用 DMF-DMA 对 2-甲基-4-吡喃酮进行烯化,开发了一种构建新型共轭吡喃的直接方法。2-(2-(二甲基氨基)乙烯基)-4-吡喃酮是高反应性底物,可进行 1,6-共轭加成/消除或 1,3-偶极环加成/消除,然后在不开环的情况下取代二甲基氨基。该策略包括导致共轭和异恶唑基取代的 4-吡喃酮结构的选择性转化。鉴于进一步设计新型部花青荧光团,确定了制备的 4-吡喃酮的光物理性质。发现了烯胺取代的 4-吡喃酮的溶剂化显色现象,并伴随着酒精中荧光强度的强烈增加。制备的共轭结构表现出有价值的光物理性质,