Study On The Photochemical Properties Of Cyclic Imides And Preparation Of Bromochloroglycoluril Disinfector

Thirteen lactams, 5-methoxypyrrolidin-2-one (MPY), 5-ethoxypyrrolidin-2-one(EPY), 5-methoxy-1-methylpyrrolidin-2-one (MMPY), 5-ethoxy-1-methylpyrrolidin-2-one (EMPY), 5-methoxy-1-ethylpyrrolidin-2-one (MEPY), 5-ethoxy-1-ethylpyrrolidin-2-one (EEPY), 6-methoxypiperidin-2-one (MPI), 6-ethoxypiperidin-2-one (EPI), 5-methoxy-5-hydroxymethyl-1-methylpyrrolidin-2-one (MHMPY),5-ethoxy-5-(1-hydroxyethyl)-1-methylpyrrolidin-2-one (EHMPY), 5-methoxy-5-hydroxymethyl-1-ethylpyrrolidin-2-one (MHEPY), 5-ethoxy-5-(1-hydroxyethyl)-1-ethylpyrrolidin-2-one (EHEPY), di-(pyrrolidin-2-on-5-yl)-peroxid (DPYP), weresynthesized from different cyclic imides in alcohol under the irradiation oflow-pressure mercury lamp (LPML, λ=250 nm). Their structures were determined byUV, IR, 1H NMR, 13C NMR, MS, elemental analysis and X-ray diffraction method.The photolysis mechanism of cyclic imides in alcohol was proposed andvalidated with UV and GC-MS by the devised experiments.The influence factors of photolysis of imide including reactor, concentration,acidity and temperature were investigated and it was found that higher acidity canaccelerate the photoreaction. Photolysis reactions of other cyclic carboxides werecompared with this analog.Bromochloroglycolurils, a new type of disinfectors, were prepared from low-costraw materials: urea, glyoxal and halogen with high yields. The one-pot output wasfour times more than that of the tetrachloroglycoluril reported in literature. Thebioactivities of these bactericides have been determined, which showed highantibacterial properties.