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Preparation and Cyclization of 4-chloro-5,5-dimethyl-3-formyl-1,2-oxathiolene- 2,2-dioxide
Li Tian 1,Lunzu Liu 2
1.Department of Chemistry and Life Chemistry Tianjin Normal University
2. State Key Laboratory of Elemento-Organic　 Institute of Elemento-Organic Chemistry　Nankai University
*Correspondence author
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Funding: 教育部博士点基金（No.2002005006）
Opened online: 8 November 2004
Accepted by: none
Citation: Li Tian,Lunzu Liu.Preparation and Cyclization of 4-chloro-5,5-dimethyl-3-formyl-1,2-oxathiolene- 2,2-dioxide [OL]. [ 8 November 2004] http://en.paper.edu.cn/en_releasepaper/content/1222
 
 
Chloroformylation of 5,5-dimethyl-1,2-oxathiolan-4-one 2,2-dioxide 4 with Vilsmeier reagent (DMF/POCl3) led to the formation of cyclic b-chlorovinylaldehyde (4-chloro-5,5-dimethyl-3-formyl-1,2-oxathiolene 2,2-dioxide 5). Compound 5 reacted with formamidine, o-amino-phenol, phthalamine, amino-pyrazole and amino-tetrazole to give the corresponding heterocyclic compounds.
Keywords:Vilsmeier reagent, chloroformylation, b-chlorovinylaldehyde, heterocyclic compounds
 
 
 

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