摘要
以硫代硫酸钠、1,4-二氯丁烷和甲醛为原料为原料,用BunteSalts法,经过一步操作合成了1,3-二硫环庚烷,其收率为63%。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1,3-二硫环庚烷的香气进行了鉴定,结果表明1,3-二硫环庚烷具有浓郁的葱蒜气味,其阈值在水中为0.25×10-6,在植物油中为13.00×10-6。
1,3- dithiocycloheptane were prepared through the aldehyde with Bunte＇s Salts prepared from 1,4-dichlorobutane and sodium thiosulfate. The yield of 1,3- dithiocycloheptane is 63%.The period of reaction is about 14h.The optimum molar ratio of 1,4-dichlorobutane and sodium thiosulfate was 1：1.The structure of 1,3- dithiocycloheptane were characterized by IR, ^1HNMR, MS. The odour of 1,3- dithiocycloheptane was identified ,the result showed that it＇ s odour is intense onion and garlic fragrance.. The threshold of 1,3- dithiocycloheptane is 0.25 × 10^-6-0.33 × 10^-6 in water and 13.00 × 10^-6-22.00 × 10^-6 in vegetable oil.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2005年第8期216-218,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)
