Klán Petr, Pelliccioli Anna Paola, Pospísil Tomás, Wirz Jakob
Department of Organic Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-611 37 Brno, Czech Republic.
Photochem Photobiol Sci. 2002 Nov;1(11):920-3. doi: 10.1039/b208171g.
2,5-Dimethylphenacyl phosphoric and sulfonic esters release the corresponding acids upon irradiation in nearly quantitative isolated yields, with quantum yields phi = 0.71 and 0.68 in methanol, 0.09 and 0.19 in benzene. In methanol solution the reactions proceed predominantly via the (Z)-photoenol, the lifetimes of which (20 and 25 micros) were determined by laser flash photolysis. The chromophore is proposed as an excellent photoremovable protecting group for use in organic synthesis and biochemistry.
2,5-二甲基苯甲酰磷酸酯和磺酸酯在光照下会释放出相应的酸，分离产率接近定量，在甲醇中的量子产率分别为0.71和0.68，在苯中的量子产率分别为0.09和0.19。在甲醇溶液中，反应主要通过(Z)-光烯醇进行，其寿命（20和25微秒）通过激光闪光光解测定。发色团被认为是用于有机合成和生物化学的优秀光可去除保护基团。
