| abstract |
The present invention relates to a method for preparing a methyl benzoylcinnamate compound in formula (I), comprising: making a compound as shown in formula (II) contact with a compound as shown in formula (III) to perform an ester formation reaction to obtain the compound as shown in formula (I), wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, and X are as defined in the description. According to the method of the present invention, the raw material for producing such photoinitiator is changed to an α-monohalogenoalkyl ketone compound from α-monohydroxyl ketone, so that production cost is lowered greatly, and the yield is increased evidently. |