Synthesis of functionalized benzo[1,3]dioxin-4-ones from salicylic acid and acetylenic esters and their direct amidation
作者:Rasmi P. Bhaskaran、Kalinga H. Nayak、Beneesh P. Babu
DOI:10.1039/d1ra05032j
日期:——
Direct synthesis of 4H-benzo[d][1,3]dioxin-4-one derivatives from salicylic acids and acetylenic esters (both mono- and disubstituted) has been described. The reaction is mediated by CuI and NaHCO3 in acetonitrile. Room temperature amidation of the synthesized 1,3-benzodioxinones with primary amines readily afforded the corresponding salicylamides in moderate to good yields.
已经描述了从水杨酸和炔属酯(单取代和双取代)直接合成 4 H-苯并[ d ][1,3]dioxin-4-one 衍生物。该反应由乙腈中的 CuI 和 NaHCO 3介导。合成的 1,3-苯并二恶酮与伯胺的室温酰胺化很容易以中等至良好的收率提供相应的水杨酰胺。