We report an exclusively tandem C—O and C—C bond forming beyond the esterification and cyclization reaction of 2-acylbenzoic acids with alcohols to regio- and stereoselective synthesis of the (Z)-3-ylidenephthalides. The reaction uses the nontoxic, inexpensive H₃PMo₁₂O₄₀ as catalyst and produces water as the sole by-product, making the reaction environmentally benign and sustainable. Moreover, this reaction features an eco-friendly reaction condition, facile scalability, and easy derivatization of the products to drugs and bioactive compounds. The mechanism studies and density functional theory calculations reveal that the appropriate acid catalyst is the key to the selectivity of this transformation.

中文翻译：

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通过 H3PMo12O40 催化 2-酰基苯甲酸与苯甲醇环化反应区域选择性和立体选择性合成 (Z)-3-Ylidenephthalides

我们报告了在 2-酰基苯甲酸与醇的酯化和环化反应以区域选择性和立体选择性合成 ( Z )-3-亚芳基苯酞之后形成的完全串联的 C-O 和 C-C 键。该反应使用无毒、廉价的 H ₃ PMo ₁₂ O ₄₀作为催化剂，并产生水作为唯一的副产物，使该反应对环境无害且可持续。此外，该反应具有环境友好的反应条件，易于扩展，产品易于衍生为药物和生物活性化合物。机理研究和密度泛函理论计算表明，合适的酸催化剂是这种转化选择性的关键。