Salicylaldehyde containing biaryls are efficiently synthesized via an unprecedented amine promoted Diels-Alder-retro-Diels-Alder cascade reaction of ynals with 2-pyrones in good yields. The reaction is instrumentally metal-free, operationally simple and mild, and tolerates a diverse array of functional groups.

中文翻译：

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含二芳基水杨醛框架之一一锅法合成经由ynals与2-吡喃酮的aminocatalytic狄尔斯-阿尔德-逆狄尔斯-阿尔德反应级联

含有水杨醛的联芳基可通过空前的胺与2-吡喃酮进行的空前的胺促进的Diels-Alder-retro-Diels-Alder级联反应有效合成。该反应在仪器上不含金属，操作简单且温和，并且可耐受各种官能团。