The two (±)-2-arylpropanoic acids ibuprofen and naproxen are conveniently prepared via conversion of methyl aryl ketones into the cyanohydrin acetates by reaction with cyanotrimethylsilane in the presence of zinc iodide or with chlorotrimethylsilane/ potassium cyanide followed by O-acetylation, deacetoxylation by catalytic hydrogenation, and alkaline hydrolysis of the cyano group.
通过在
碘化锌存在下与三甲基
氰基
硅烷或三
甲基氯硅烷/
氰化钾反应,将甲基芳基酮转化为
氰醇
乙酸酯,然后进行 O-乙酰化、催化氢化脱乙酰氧基化以及
氰基的碱性
水解,可以方便地制备两种 (±)-2 芳基
丙酸布洛芬和
萘普生。