- Photocatalytic synthesis method of 1-hydroxyl cyclohexyl phenyl ketone compound and application thereof
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A photocatalytic synthesis method of a 1-hydroxyl cyclohexyl phenyl ketone compound comprises the following steps that (a) 4-Ryl benzaldehyde and cyclohexane produce free radical reaction under the irradiation of an ultraviolet lamp to obtain 4-Ryl cyclohexyl phenyl ketone; (b) the 4-Ryl cyclohexyl phenyl ketone uses dimethyl sulfoxide as a solvent, uses hydrobromic acid as a bromine source, hydroxyl substitution is performed to obtain 1-hydroxyl cyclohexyl-(4-R phenyl) ketone, and the dimethyl sulfoxide is removed for recycle through distillation. A 1-hydroxyl cyclohexyl-(4-R phenyl) ketone coarse product is obtained through a crystallization method, and a 1-hydroxyl cyclohexyl-(4-R phenyl) ketone photoinitiator finished product is obtained through recrystallization. The synthesis methodhas the advantages that the synthesis steps of the method are simple, the preparation cost is low and no pollution is produced. The prepared cyclohexyl phenyl ketone compound is suitable for the efficient photoinitiator of UV light curing system, the product has better non-yellowing characteristic under the irradiation of an ultraviolet source, and popularization and development of a UV light curing technology are facilitated.
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