Carbon dioxide: a reagent for the simultaneous protection of nucleophilic centres and the activation of alternative locations to electrophilic attack
作者:Alan R. Katritzky、Wei-Qiang Fan、Anna E. Koziol、Gus J. Palenik
DOI:10.1016/s0040-4020(01)86820-4
日期:——
2-Pyridone, using the one-pot protection method, is lithiated specifically in the 4-position. In this way, a range of 4-substituted 2-pyridones was prepared. Their orientation of substitution was proved by X-ray analysis
使用一锅保护法将2-吡啶酮专门锂化在4位上。以这种方式,制备了一系列的4-取代的2-吡啶酮。X射线分析证明了它们的取代方向