REACTIONS OF 4-ALKYL-1-TRITYL-1-PHOSPHA-2,6,7-TRIOXABICYCLO[2.2.2]OCTANE CATIONS WITH BASES
作者:Yeping Zhou、Andrzej E. Wroblewski、John G. Verkade
DOI:10.1080/10426509808036986
日期:1998.1.1
Abstract The syntheses of 4-alkyl-1-trityl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane tetrafluorobo-rates (alkyl group = Me, 4; Et, 5; r-Bu, 6) are described. Compounds 4, 5 and 6 in the presence of base (pyridine, DBU) or base (pyridine, DBU) plus H2O undergo Arbuzov ring opening reactions to give pyridinium salts or a mixture of hydrolyzed products and pyridinium salts, respectively. The configurations
摘要 4-烷基-1-三苯甲基-1-磷酸-2,6,7-三氧杂双环[2.2.2]辛烷四氟硼酸酯的合成(烷基 = Me, 4; Et, 5; r-Bu, 6)被描述。在碱(吡啶,DBU)或碱(吡啶,DBU)加水存在下,化合物 4、5 和 6 进行 Arbuzov 开环反应,分别得到吡啶鎓盐或水解产物和吡啶鎓盐的混合物。产物的构型通过核磁共振光谱和 X 射线晶体学研究得到解决。还制备了无环三苯甲基盐 [(RO)3 CPh,]+BF4(R = Et, 7;新戊基, 8) 并进行了它们与碱或碱加 H2O 的反应,以与多环三苯甲基盐的反应进行比较.