The [2+2] photocycloaddition of two double-bond moieties is arguably the most efficient way to form a four-membered ring, but this route is rarely used to construct azetidine rings. Now, the development of an isoxazoline carboxylate cycloaddition partner offers a general approach to synthesize diverse azetidine products.

中文翻译：

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轻触复杂产品。

两个双键部分的[2 + 2]光环加成可以说是形成四元环的最有效方法，但是这种途径很少用于构建氮杂环丁烷环。现在，异恶唑啉羧酸酯环加成伙伴的开发提供了一种合成各种氮杂环丁烷产物的通用方法。