Our investigations on the reaction mechanism to account for regioselectivity on the addition of indoles to unsymmetrical silyloxyallyl cations are reported. Using both experimental and computational methods, we confirmed the significance of steric effects from the silyl ether group toward directing the inward approach of indoles, leading to nucleophilic attack at the less substituted electrophilic
报告了我们对不对称甲
硅烷基
烯丙基阳离子上添加
吲哚后区域选择性的反应机理的研究。使用实验和计算方法,我们证实了甲
硅烷基醚基团对指导
吲哚向内进入的空间效应的重要性,导致取代度较低的亲电子α'-
碳发生亲核攻击。残余
水对加快反应速度的作用是通过使参与的甲
硅烷基
烯丙基阳离子稳定来实现的。