Nitrogen bridgehead compounds. Part<b>65</b>. Vilsmeier-haack formylation of 4<i>H</i>-pyrido[1,2-<i>a</i>]pyrimidin-4-ones. Part<b>6</b>
作者:ÁGnes Horváth、István Hermecz
DOI:10.1002/jhet.5570230507
日期:1986.9
2-Substituted 3-formyl-4H-pyrido[1,2-a]pyrimidin-4-ones can be synthethized by Vilsmeier-Haack formylation with the dimethylformamide-phosphoryl chloride complex only from those 4H-pyrido[1,2-a]pyrimidin-4-ones which contain a substituent with electron-releasing resonance effect in position 2. The products were characterized by uv, ir and 1H nmr spectroscopy.
2-取代的3-甲酰基-4- ħ -吡啶并[1,2-一个]嘧啶-4-酮可以通过维尔斯迈尔-哈克甲酰化与二甲基甲酰胺,磷酰氯只对4络合物synthethized ħ -吡啶并[1,2- a ]嘧啶-4-酮,其在2位含有具有电子释放共振效应的取代基。产物通过uv,ir和1 H nmr光谱表征。