Chemistry of the 2,5-Didehydropyridine Biradical: Computational, Kinetic, and Trapping Studies toward Drug Design
作者:Johannes Hoffner、Marc J. Schottelius、Derek Feichtinger、Peter Chen
DOI:10.1021/ja9730223
日期:1998.1.1
A combined computation, kinetic, and trapping study of the 2,5-didehydropyridine biradical finds the hydrogen abstraction reaction to be tunable by protonation. The observation of small amounts of pyridine products in the thermolysis of a C,N-dialkynylimine, or azaenediyne, only when the reaction occurs in the presence of moderate amounts of protic acid, is consistent with qualitative theoretical predictions
对 2,5-二脱氢吡啶双自由基的综合计算、动力学和捕获研究发现,夺氢反应可通过质子化进行调节。在 C,N-二炔亚胺或氮杂烯二炔的热解中观察到少量吡啶产物,仅当反应在适量质子酸存在下发生时,与定性理论预测以及从头计算在CASSCF 和 CASMP2 级别。讨论了这些发现对更具选择性的抗肿瘤剂的影响。