食品科学 ›› 2006, Vol. 27 ›› Issue (10): 236-238.

• 工艺技术 • 上一篇    下一篇

2-甲基-2-苯基-1,3-二硫环庚烷的合成及香气研究

 刘红霞,  胡卫兵,  冯驸,  余爱农   

  1. 湖北民族学院化学与环境工程学院
  • 出版日期:2006-10-15 发布日期:2011-11-16

Study on the Synthesis of 2-methyl-2-phenyl-1,3-dithiocycloheptane and Its Odour

 LIU  Hong-Xia,   Hu-Wei-Bing,   Feng-Fu,   Yu-Ai-Nong   

  1. School of Chemistry and Environmental Engineering, Hubei Institute for Nationalities, Enshi 445000, China
  • Online:2006-10-15 Published:2011-11-16

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。

关键词:  , BunteSalts法, 合成, 2-甲基-2-苯基-1, 3-二硫环庚烷, 香气

Abstract: 2-methyl-2-phenyl-1,3-dithiocycloheptane were prepared through the benzenemethylal with Buntes’ 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.

Key words: Bunte Salts, synthesis, 2-methyl-2-phenyl-1,3-dithiocycloheptane, odour