The Role of Conjugation in the Halogen−Lithium Exchange Selectivity: Lithiation of 4,6,7,9‐Tetrabromo‐1,3‐dimethyl‐2,3‐dihydro‐1<i>H</i>‐perimidine
作者:Artyom A. Yakubenko、Elena Yu. Tupikina、Alexander S. Antonov
DOI:10.1002/chem.202301439
日期:2023.8.15
The first case of successful suppression of the coordination of a lithium atom with a dialkylamino group by the effective conjugation of the latter with the aromatic core has been discovered on the example of the bromine−lithium exchange in 4,6,7,9-tetrabromo-1,3-dimethyl-2,3-dihydro-1H-perimidine. Experimental results are explained by means of quantum chemical calculations.
第一个通过二烷基氨基与芳香核的有效共轭成功抑制锂原子与二烷基氨基配位的案例已在4,6,7,9-四溴中的溴-锂交换的例子中发现。 -1,3-二甲基-2,3-二氢-1H-哌啶。实验结果通过量子化学计算来解释。