An operationally simple one-pot, two-step procedure for the desymmetrization of benzils is herein described. This consists in the chemoselective cross-benzoin reaction of symmetrical benzils with aromatic aldehydes catalyzed by the methyl sulfinyl (dimsyl) anion, followed by microwave-assisted oxidation of the resulting benzoylated benzoins with nitrate, avoiding the costly isolation procedure. Both
本文描述了用于使苄基去对称化的操作简单的一锅,两步过程。这包括对称的苯与甲基亚磺酰基(二亚甲基)阴离子催化的芳族醛的
化学选择性交叉
安息香反应,然后用
硝酸根微波辅助氧化生成的苯甲酰化
安息香,从而避免了昂贵的分离步骤。吸电子和供电子取代基都可以容纳在最终不对称
苯甲腈的芳环上。