Herein, we report an unprecedented thermal [2 + 2]-cycloaddition between silylalkynes and allenylphenols to form an aromatizing cyclobutachromene intermediate, followed by the nucleophilic addition of water to yield functionalized arylcyclobutenals. This reaction is atom- and pot-economical because all the atoms contained in the starting material are retained in the final product, no other reactants are required, and it proceeds in one-pot.

中文翻译：

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甲硅烷基炔烃和烯丙基苯酚之间的热[2 + 2]-环加成反应，然后亲核加水：无金属且经济的芳基环丁烯醛合成

在本文中，我们报道了甲硅烷基炔烃和烯丙基苯酚之间空前的热[2 + 2]环加成反应，形成芳构化环丁烯中间体，然后亲核加水生成官能化的芳基环丁烯醛。该反应是原子上和罐内经济的，因为起始材料中包含的所有原子都保留在最终产物中，不需要其他反应物，并且它一步反应进行。