A binary acid system has been developed that features an air‐stable organometallic precursor, titanocene dichloride, and simple organic cooperativeBrønstedacids, which allowed for mild and highly efficient Mannich reactions of both aryl and alkyl ketones with excellent yields and satisfactory diastereoselectivity. Mechanistic studies, including 1H NMR titration, X‐ray structure analyses as well as
已经开发了一种二元酸体系,其特征是具有空气稳定性的有机金属前体,二茂钛二氯化物和简单的有机协作布朗斯台德酸,可实现芳基和烷基酮的温和高效的曼尼希反应,并具有优异的收率和令人满意的非对映选择性。机理研究,包括1 H NMR滴定,X射线结构分析以及催化活性物质的分离,阐明了这种新的二元酸体系的巨大协同作用。