sequential one-pot approach. The tetrafluoroborate salts can be purified by recrystallization or chromatography and subsequently converted to the phosphazene bases by treatment with t-BuOK. Basicity values in tetrahydrofuran have been measured for the obtained phosphazene bases by means of spectrophotometric titration.
具有手性,对映体纯的1,2-二胺部分的空气稳定的结晶四
氨基
硼酸四
氟硼酸酯已通过三步顺序一锅法合成。可以通过重结晶或色谱法纯化四
氟硼酸盐,然后通过用t- BuOK处理将其转化为
磷腈碱。对于所得的
磷腈碱,通过分光光度滴定法测定了
四氢呋喃中的碱度值。