A palladium‐catalyzed enantioselective sequential ring‐opening/cross‐coupling of cyclobutanones is disclosed that provides chiral indanones bearing C3‐quaternary stereocenters. The reaction process involves palladium‐catalyzed nucleophilic addition of cyclobutanones and aryl halides, enantioselective β‐carbon elimination, and intermolecular trapping of a transient σ‐alkylpalladium complex with boronic
A palladium‐catalyzedenantioselective intramolecular σ‐bond cross‐exchange between C−I and C−C bonds is realized, providing chiral indanones bearing an alkyl iodide group and an all‐carbon quaternarystereocenter. Pd/TADDOL‐derived phosphoramidite is found to be an efficient catalytic system for both C−C bond cleavage and alkyl iodide reductive elimination. In addition to aryl iodides, aryl bromides
A carbonylation–carboxylation synthetic sequence, viadouble CO2 fixation, is described. The productive merger of a Ni-catalyzed cross-electrophile coupling manifold, with the use of AlCl3, triggered a cascade reaction with the formation of three consecutive C–C bonds in a single operation. This strategy traces an unprecedented synthetic route to ketones under Lewis acid assisted carbon dioxide valorization
描述了通过双CO 2固定的羰基化-羧化合成序列。使用 AlCl 3的 Ni 催化交叉亲电子偶联流形的高效合并引发了级联反应,在一次操作中形成了三个连续的 C-C 键。该策略追踪了路易斯酸辅助二氧化碳增值下酮的前所未有的合成路线。计算结果揭示了 AlCl 3独特的双重功能,标记 ( 13 CO 2 ) 实验验证了 CO 2真正掺入两个功能组中。