Silyl Assistance in the Intramolecular Addition of Pyridyl Radicals onto Pyridines and Quinolines
作者:Fabiana Filace、Pedro A. Sánchez-Murcia、David Sucunza、Adrián Pérez-Redondo、Julio Álvarez-Buílla、Federico Gago、Carolina Burgos
DOI:10.1002/ejoc.201600170
日期:2016.4
The first example of a stable acylazinium salt obtained by an intramolecular acylpyridine-centered radical attack on azine nitrogen atoms is reported. Depending on the relative position of the bromo substituent on the attacking aminopyridine ring, it is possible to obtain selectively either the N-attack product or a different C-attack derivative. A rationale for this pathway selectivity was obtained
报道了通过分子内酰基吡啶中心自由基攻击吖嗪氮原子获得的稳定 acylazinium 盐的第一个例子。根据溴取代基在攻击氨基吡啶环上的相对位置,有可能选择性地获得 N 攻击产物或不同的 C 攻击衍生物。这种途径选择性的基本原理是从量子力学计算中获得的。