Unusual Friedel-Crafts reactions, IX. One-step ortho-acylation of phenols with α,β-unsaturated acyl chlorides. Synthesis of 2'-hydroxychalcones and sorbicillin analogues
作者:Franca Bigi、Giovanni Casiraghi、Giuseppe Casnati、Stefania Marchesi、Giovanni Sartori、Carlo Vignali
DOI:10.1016/0040-4020(84)85088-7
日期:1984.1
The reaction of bromomagnesium phenolates 1 in toluene with α, β-unsaturated acyl chlorides 2 at room temperature provides a straightforward highly selective synthesis of α,β-unsaturated 2-hydroxyarylketones 3. 2'-Hydroxychalcones, ortho-sorbylphenols including sorbicillin 3g, and ortho-propiolylphenols were usefully synthesized by this way. This reaction provides a further example of the synthetic
在室温下,溴化溴化镁苯酚盐1与α,β-不饱和酰氯2的反应提供了α,β-不饱和2-羟基芳基酮3的直接高选择性合成。通过这种方式有用地合成了2'-羟基查耳酮,包括山梨素3g的邻山梨醇基酚和邻丙醇基酚。该反应提供了在苯酚衍生物的精制中螯合控制方法的合成多功能性的另一个实例。