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Study on the synthesis of 2-methyl-1,3-dithiocycloheptane and odour
Author(s): HU Wei-bing, LIU Hong-xia, YU Ai-nong, XIANG Bi-kun
Pages: 23-
26
Year: 2005
Issue:
12
Journal: CHINA CONDIMENT
Keyword: Bunte Salts法; 合成; 2-甲基-1; 3-二硫环庚烷; 香气;
Abstract: 以硫代硫酸钠、1,4-二氯丁烷和乙醛为原料,用Bunte Salts法,经过一步操作合成了2-甲基-1,3-二硫环庚烷,其收率为42%.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-1,3-二硫环庚烷的香气进行了鉴定,结果表明2-甲基-1,3-二硫环庚烷具有浓郁的葱蒜气味,其阈值在水中为0.19ppm,在植物油中为12.90ppm.
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