Toward N,P-Doped π-Extended PAHs: A One-Pot Synthesis to Diannulated 1,4,2-Diazaphospholium Triflate Salts
作者:Robin Schoemaker、Kai Schwedtmann、Felix Hennersdorf、Antonio Bauzá、Antonio Frontera、Jan J. Weigand
DOI:10.1021/acs.joc.0c00577
日期:2020.11.20
novel method for the one-pot synthesis of diannulated 1,4,2-diazaphospholium triflate salts by a Me3SiOTf-mediated self-condensation of dichlorophosphaneyl aza-(poly)cyclic aromatic hydrocarbons (aza-(P)AHs; namely, pyridine, quinoline, phenanthridine, and benzo[d]thiazole) is reported. The diannulated 1,4,2-diazaphospholium triflate salts are characterized by multinuclear NMR spectroscopy, X-ray analysis
一种由Me 3 SiOTf介导的二氯膦酰基氮杂-(多)环芳烃(aza-(P)AHs)的自缩合反应一锅合成三氟甲磺酸1,4,2-二氮杂磷鎓盐的新方法据报道吡啶,喹啉,菲啶和苯并[ d ]噻唑。通过多核NMR光谱,X射线分析以及计算得到的NICS值对三氟甲磺酸1,4,2-二氮杂磷鎓盐进行了表征,强调了它们的芳香特性。量子力学计算揭示了分子间的反应机理。跟踪化学反应,例如与XeF 2或SO 2 Cl 2的卤化反应与联吡啶衍生物选择性地得到相应的二卤代σ 4,λ 5 -和四卤- σ 5,λ 6 -diazaphospholium三氟甲磺酸酯的盐。二卤代σ 4,λ 5 -diazaphospholium三氟甲磺酸盐可以很好地充当用于引入阳离子2-(1,2'-联吡啶)的替代-1- iumyl配体(-1,2'- bipyl)时,单阳离子结构典型的2,2'-联吡啶配体的异构体(2,2'-联吡啶)。