作者:Yoshiki Okamoto、Ichiro Kokubo、Setsuo Takamuku
DOI:10.1246/bcsj.63.2438
日期:1990.8
Upon UV-irradiation, the C–P bond of (4-pyridylmethyl)phosphonic acid cleaved only near the isoelectronic point to give 4-methylpyridinium phosphate, while (1-benzyl-4-pyridiniomethyl)phosphonic acid underwent C–P bond cleavage above pH 4 to give 1-benzyl-4-methylpyridinium phosphate. On the other hand, the C–P bond of (2-pyridylmethyl)phosphonic acid cleaved under pH region of about 1 to 2, while (1-benzyl-2-pyridiniomethyl)phosphonic acid underwent C–P bond cleavage above pH 4.
在紫外线辐射下,(4-吡啶基甲基)磷酸的C–P键仅在等电点附近断裂,生成4-甲基吡啶铵磷酸盐,而(1-苄基-4-吡啶基甲基)磷酸在pH值大于4时发生C–P键断裂,生成1-苄基-4-甲基吡啶铵磷酸盐。另一方面,(2-吡啶基甲基)磷酸的C–P键在pH约为1到2的范围内断裂,而(1-苄基-2-吡啶基甲基)磷酸在pH值大于4时发生C–P键断裂。