Herein we present a method for base-mediated sequential annulation reaction of conjugated dienes. The method offers an efficient pathway for the effective construction of bicyclo[4.1.0]heptenes. Notable features of this approach include good yields, remarkable stereoselectivity, as well as a broad substrate scope and significant step efficiency. In addition, the reaction could be effectively scaled up to a gram scale under standard condition.

中文翻译：

---

碱介导的共轭二烯和巴豆酸盐衍生的硫酰化物的连续环化反应：双环[4.1.0]庚烯的有效合成

在此，我们提出了一种碱基介导的共轭二烯顺序环化反应的方法。该方法为有效构建双环[4.1.0]庚烯提供了一种有效的途径。这种方法的显着特点包括良好的产量、显着的立体选择性，以及广泛的底物范围和显着的步长效率。此外，在标准条件下，反应可以有效地放大至克级。