mild and efficient method has been developed for the chemoselective preparation of 1,1-diacetates (acylals) from aldehydes catalyzed in the presence of a catalytic amount (0.1 mmol) of anhydrous cobalt(II) bromide under solvent-free conditions. The remarkable selectivity under mild and neutral conditions, excellent yields, short reaction time, and easily available and inexpensive catalyst are important
已开发出一种温和有效的方法,用于在无溶剂条件下,在催化量 (0.1 mmol)
无水溴化钴 (II) 存在下催化
醛类化学选择性制备 1,1-二
乙酸酯(酰基)。在温和和中性条件下显着的选择性、优异的收率、反应时间短以及易于获得且廉价的催化剂是该方法的重要特征。