1,3-Dienes are versatile synthons and important monomers. Herein we report a carbon dioxide promoted dehydration reaction of primary allylic alcohols to produce substituted 1,3-dienes in good yields. Taking advantage of carbon dioxide as a promoter to facilitate the alcoholic C–O bond cleavage via the formation of an allylic bicarbonate ester, this reaction proceeds under mild conditions.

中文翻译：

---

二氧化碳促进的钯催化伯烯丙基醇的脱水：获得取代的1,3-二烯

1,3-二烯是通用的合成子和重要的单体。在本文中，我们报道了二氧化碳促进的伯烯丙基醇的脱水反应，以高收率生产取代的1,3-二烯。利用二氧化碳作为促进剂，通过形成烯丙基碳酸氢酯来促进醇C–O键的裂解，该反应在温和的条件下进行。