Synthesis and Pyrolysis Analysis of Glyceryl Monomenthylformate

Diglyceryl borate was synthesized by the reaction of boric acid and glycerol in a nitrogen atmosphere,then esterified with menthylformic acid under the catalysis of p-toluenesulfonic acid,finally glyceryl monomenthylformate was obtained by acidic hydrolysis with the total yield of 79.46%.The structure of the obtained product was identified by IR,1H NMR and MS spectra.The gustatory evaluation,pyrolysis(Py-GC/MS) and thermo-gravimetric analysis(TGA) of the product were conducted,and its transfer rate to mainstream cigarette smoke was investigated.The results showed that: 1) Thermo-gravimetric curve indicated that the initial weight loss took place at 150 ℃,weight loss accounted for about 90%;the secondary weight loss temperature was 280 ℃,lost about 10%;2) Most part of the product did not break apart under pyrolysis conditions;3) The transfer rate to mainstream cigarette smoke was 61.02% determined by internal standard curve method;4) The threshold of gustatory cool sensation was 1.0 μg/mL.