An efficient method has been devised for the synthesis of dihydroisobenzofuran derivatives through the reaction of in situ generated ynones with potentially C‐nucleophilic malonate esters. Both the basicity of fluoride anion and ammonium cation–π interaction with alkyne unit might play a crucial role in the cyclization reaction.

中文翻译：

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TBAF催化邻丙烷基酯丙二酸酯与丙二酸酯的环化反应：一种可能的阳离子-π相互作用作为活化方法

通过原位产生的炔酮与潜在的C-亲核丙二酸酯的反应，已设计出一种有效的方法来合成二氢异苯并呋喃衍生物。氟阴离子和与阳离子单元的铵阳离子-π相互作用的碱性都可能在环化反应中起关键作用。