摘要
以硫代硫酸钠、1,4-二氯丁烷和苯甲醛为原料,用BunteSalts法,经过一步操作合成了2-甲基-2-苯基-1,3-二硫环庚烷,其收率为60%。实验表明,当1,4-二氯丁烷与硫代硫酸钠以等摩尔投料时,可减少盐酸用量,并能避免单质硫的析出而影响分离提纯。用IR、1HNMR、MS证实了目标化合物结构,并对2-甲基-2-苯基-1,3-二硫环庚烷的香气进行了鉴定,结果表明2-甲基-2-苯基-1,3-二硫环庚烷具有浓郁的葱蒜气味,其阈值在水中为0.24×10-6,在植物油中为15.00×10-6。
2-methyl-2-phenyl-1,3-dithiocycloheptane were prepared through the benzenemethylal with Bunte＇s Salts prepared from 1,4-dichlorobutane and sodium thiosulfate. The yield of 2-methyl-2-phenyl-1,3-dithio- cycloheptane is 60%. The optimum molar ratio of 1,4-dichlorobutane and sodium thiosulfate was 1：1.The structure of 2-methyl-2-phenyl- 1,3- dithiocycloheptane were characterized by IR, 1HNMR, MS. The odour of 2-methyl-2-phenyl-1,3-dithiocycloheptane was identified, and the result showed that it＇ s odour is intense onion and garlic fragrance. The threshold of 2-methyl-2-phenyl-1, 3-dithiocycloheptane is （0.24-0.35）×10^-6 in water and （15.00-23.40）× 10^-6 in vegetable oil.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2006年第10期236-238,共3页
Food Science
基金
国家民委重点科研项目(200145)
湖北省教育厅重点项目(2003A007)
