... The Journal of Organic ... Phenacyl esters are commonly used as photolabile protecting groups in organic synthesis.(16-19) Usually they function as terminal protecting groups, whereas our ... 1H), 3.11−3.05 (m, 1H), 2.72 (t, J = 7.6 Hz, 2H), 2.42 (t, J = 7.4 Hz, 2H), 2.30 (t, J = 7.2 Hz ...