Alkyl chromium(0) carbene complexes have been explored as the cross‐coupling partners in the palladium‐catalyzed reaction with aryl or alkenyl boronic acids. This coupling reaction displays the versatile reactivities of alkyl chromium(0) carbenes under palladium catalysis. Mechanistically, this transformation is proposed to involve deprotonation of the alkyl chromium carbene substrate to generate a vinyl chromium anion intermediate that undergoes transmetalation to organopalladium species and reductive elimination.

中文翻译：

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Pd催化的烷基铬（0）费希尔碳化合物与有机硼酸的氧化交叉偶联

烷基铬（0）卡宾配合物已被探索为钯与芳基或烯基硼酸催化的交叉偶联伙伴。此偶联反应显示了钯催化下烷基铬（0）卡宾的通用反应性。从机理上讲，提出这种转变涉及烷基铬卡宾底物的去质子化以产生乙烯基铬阴离子中间体，该中间体经历金属转移成有机钯物质并还原消除。