Pyrolysis-GC/MS of Menthyl Esters of N-Benzoxycarbonyl Amino Acid

• 出 处: Chemical Research in Chinese Universities
• 发表日期: 2010年02期
• 关键词: esters carboxy moiety pyrolysis benzene behaviour linking cleavage isomers aroma

With the aid of a Pyrolysis-GC/TOF MS technique,the pyrolysis behaviour of two menthyl esters of N-benzoxycarbonyl amino acid was investigated.A clear pattern emerges involving the cleavage of the bond linking the menthyl ring to the carboxy group,followed by further degradation of the fragments.The major pyroproducts were p-menth-1-ene pyrolysed at a higher temperature or p-menth-2-ene pyrolysed at a lower temperature,and va-rious derivatives of cyclohexene pyrolyzed from the menthyl ring.In addition,some of the products were also iden-tified as derivatives of benzene from the pyrolysis of benzyloxyl moiety.

With the aid of a Pyrolysis-GC / TOF MS technique, the pyrolysis behavior of two menthyl esters of N-benzoxycarbonyl amino acid was investigated. A clear pattern emerges involving the cleavage of the bond linking the menthyl ring to the carboxy group, followed by further degradation of the fragments. major pyroproducts were p-menth-1-ene pyrolysed at a higher temperature or p-menth-2-ene pyrolysed at a lower temperature, and va-rious derivatives of cyclohexene pyrolyzed from the menthyl ring. addition, some of the products were also iden-tified as derivatives of benzene from the pyrolysis of benzyloxyl moiety.