Part of the solution: In different solvents, iodine chemoselectively participates in the oxidative esterification or the electrophilic iodocyclization of hydroxyalkynyl aldehydes that contain a primary alcohol moiety. This protocol provides alkyl 4-(3-hydroxyalkynyl)benzoates when performed in an alcohol. In CH₂Cl₂, the aldehydes undergo an electrophilic iodocyclization to afford products that contain a bioactive dihydrofuran/pyran ring system.

中文翻译：

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羟基炔基醛的化学选择性氧化酯化和碘环化

溶液的一部分：在不同的溶剂中，碘化学选择性地参与含有伯醇部分的羟基炔基醛的氧化酯化或亲电碘代环化反应。当在醇中进行时，该方案提供了4-（3-羟基炔基）苯甲酸烷基酯。在CH ₂ Cl _2中，醛经过亲电碘环化，得到含有生物活性二氢呋喃/吡喃环系统的产物。