The First Nonthiolic, Odorless 1,3-Propanedithiol Equivalent and Its Application in Thioacetalization
作者:Qun Liu、Guangbo Che、Haifeng Yu、Yingchun Liu、Jingping Zhang、Qian Zhang、Dewen Dong
DOI:10.1021/jo034702t
日期:2003.11.1
equivalent, 1 was investigated in the thioacetalization reaction. Various types of aldehydes and ketones 3 were converted to the corresponding dithianes 4 in the presence of 1 in high yields (79-97%). Moreover, 1 exhibited obvious chemoselectivity between aldehyde and ketone in this thioacetalization reaction. A mechanism for this thioacetalization reaction is proposed.
使用Vilsmeier-Haack通过氯化3-(1,3)-二硫代亚戊基戊烷-2,4-二酮2来合成2- [2-氯-1-(1-氯乙烯基)亚芳基] -1,3-二硫代烷1。试剂产率为99%。在硫代缩醛化反应中,研究了一种新型的无硫,无味的1,3-丙二硫醇当量。在1的存在下,各种类型的醛和酮3以高收率(79-97%)转化为相应的二噻烷4。此外,在该硫代缩醛化反应中,1在醛和酮之间表现出明显的化学选择性。提出了该硫缩醛化反应的机理。