The comparison of Entry 1 with Entry 4 suggests that sun- light is a promoter for the hydrolysis since the reaction in the dark is too slow to be detected. This can be further substantiat- ed by the comparison of Entry 4 with Entry 3 that the reaction under UV light was much more efficient. Therefore, it can be concluded that the hydrolysis of 1a, in fact, was promoted by UV light. The hydrolysis of the Schiff bases was affected markedly by the solvents used. As ...
