Diels–Alder reactions of 3,6-disubstituted 1,2,4,5-tetrazines. Synthesis and X-ray crystal structures of diazafluoranthene derivatives
作者:Nelli Rahanyan、Anthony Linden、Kim K. Baldridge、Jay S. Siegel
DOI:10.1039/b820551e
日期:——
The synthesis of a series of 3,6-disubstituted-1,2,4,5-tetrazines has been effected using an inverse electron demand [2 + 4] cycloaddition strategy. The crystal structures of 18 members of this series of diazafluoranthenes are reported. Stereochemical analysis shows that diazafluoranthenes, substituted across the bay region, are helically-twisted strained aromatic molecules. The dihedral angle between
一系列3,6-二取代-1,2,4,5-四嗪的合成已使用反电子需量[2 + 4]环加成策略完成。据报道,该系列二氮杂蒽酮的18个成员的晶体结构。立体化学分析显示,跨海湾区域取代的二氮杂蒽酮是螺旋扭曲的应变芳族分子。哒嗪环与萘基环之间的二面角范围为0.5°至20.9°,并且遵循海湾区域的空间拥挤程度。使用M06-2X / cc-pVDZ方法将晶体结构与使用密度泛函理论确定的计算结构进行比较。