Photolysis of Pyridylmethyl- and Pyridiniomethylphosphonic Acids
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.