Abstract

A general method for the synthesis of α,β-unsaturated esters, ketones, and nitriles is successfully achieved by a one-pot copper-catalyzed oxidation with O₂ in air as oxidant. The solvent mixture of acetonitrile and formamide (1:1) is optimized to ensure the oxidation of alcohols, deprotonation of phosphonium salt, and Wittig reaction occur efficiently in one pot. A broad range of substrates has been explored for this process, including three electron-withdrawing group (CO₂Et, COPh, CN) functionalized phosphonium salts. They reacted not only with benzylic and heteroaromatic alcohols, but also with aliphatic alcohols, forming the corresponding α,β-unsaturated esters, ketones, and nitriles in moderate to excellent yields.

A general method for the synthesis of α,β-unsaturated esters, ketones, and nitriles is successfully achieved by a one-pot copper-catalyzed oxidation with O₂ in air as oxidant. The solvent mixture of acetonitrile and formamide (1:1) is optimized to ensure the oxidation of alcohols, deprotonation of phosphonium salt, and Wittig reaction occur efficiently in one pot. A broad range of substrates has been explored for this process, including three electron-withdrawing group (CO₂Et, COPh, CN) functionalized phosphonium salts. They reacted not only with benzylic and heteroaromatic alcohols, but also with aliphatic alcohols, forming the corresponding α,β-unsaturated esters, ketones, and nitriles in moderate to excellent yields.

中文翻译：

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由醇和Ph盐一锅法合成α，β-不饱和酯，酮和腈

摘要

通过在空气中以O ₂为氧化剂的一锅铜催化氧化成功地实现了合成α，β-不饱和酯，酮和腈的通用方法。乙腈和甲酰胺（1：1）的溶剂混合物经过优化，可确保在一锅中有效地进行醇类的氧化，de盐的去质子化和Wittig反应。已针对该方法探索了广泛的底物，包括三个吸电子基团（CO ₂ Et，COPh，CN）官能化的salts盐。它们不仅与苄基和杂芳族醇反应，而且与脂族醇反应，以中等至极好的收率形成相应的α，β-不饱和酯，酮和腈。

通过在空气中以O ₂为氧化剂的一锅铜催化氧化成功地实现了合成α，β-不饱和酯，酮和腈的通用方法。乙腈和甲酰胺（1：1）的溶剂混合物经过优化，可确保在一锅中有效地进行醇类的氧化，de盐的去质子化和Wittig反应。已针对该方法探索了广泛的底物，包括三个吸电子基团（CO ₂ Et，COPh，CN）官能化的salts盐。它们不仅与苄基和杂芳族醇反应，而且与脂族醇反应，以中等至极好的收率形成相应的α，β-不饱和酯，酮和腈。