borrowing hydrogen strategy in which alcohols were activated by transition metal‐catalyzed anaerobic dehydrogenation, the direct addition of aldehydes was found to be an effective but simpler way of alcohol activation that can lead to efficient and green aldehyde‐catalyzed transition metal‐free dehydrative C‐alkylation of methyl carbinols with alcohols. Mechanistic studies revealed that the reaction proceeds
与借用氢的策略通过过渡
金属催化的厌氧脱氢来活化醇不同,发现直接添加醛是一种有效但更简单的醇活化方法,可以导致高效且绿色的无醛催化的过渡
金属甲基
甲醇与醇的脱
水C-烷基化。机理研究表明,反应是通过原位进行的 通过外部醛,甲基醇的
缩醛和Meerwein-Ponndorf-Verley(MPV)型底物醇还原α,β-不饱和酮,通过Oppenauer氧化甲基
甲醇形成酮。副产物酮将在下一次冷凝中回收,以完成催化循环。