The development of new methods to incorporate carbon dioxide into organic molecules is of special significance and interest as it is an abundantly available and recyclable C1 source. Catalytic hydrocarboxylation of readily available olefins with CO₂ represents a highly atom- and step-economic approach toward transformations of CO₂ into widely-used aliphatic acids. However, due to relatively lower reactivity of them, this goal has been always a formidable challenge. Herein we review relevant progress on transition metal-mediated or catalyzed methodologies toward the desired hydrocarboxylation, with an emphasis on the development of two main pathways, including transition-metal-catalyzed cyclometallation of olefin and CO₂ and direct addition of alkylmetal to CO₂.

将二氧化碳掺入有机分子的新方法的开发具有特殊的意义和兴趣，因为它是一种可大量利用且可回收的C1来源。易获得的烯烃与CO _2的催化加氢羧化代表了将CO ₂转化为广泛使用的脂肪酸的高度原子经济和分步经济的方法。然而，由于它们的相对较低的反应性，这个目标一直是一个艰巨的挑战。本文中，我们回顾了过渡金属介导或催化方法学向期望的加氢羧化反应的相关进展，重点介绍了两个主要途径的发展，包括过渡金属催化的烯烃和CO _2的环金属化以及将烷基金属直接添加到CO中₂。