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- Title
An improved procedure for the synthesis of 3,4-ethylenedioxythiophene.
- Authors
Zhang, Hua; Qian, Chao; Chen, Xin-Zhi
- Abstract
An improved procedure for the synthesis of 3,4-ethylenedioxythiophene is reported starting from ethyl chloroacetate. Reaction with sodium sulfide gave diethyl thiodiglycolate which was then reacted with diethyl oxalate, and then 1,2-dibromoethane to give 2,5-dicarbethoxy-3,4-ethylenedioxythiophene. Hydrolysis, and decarboxylation gave 3,4-ethylenedioxythiophene in 16% overall yield. The structures of the key intermediates in synthetic routes were confirmed, and every step was optimised, to give a procedure suitable for large-scale industrial production.
- Subjects
CHEMICAL research; CHEMICAL synthesis; DECARBOXYLATION; ETHYL chloride; POLYMERS; OXALATES
- Publication
Journal of Chemical Research, 2011, Vol 35, Issue 6, p339
- ISSN
1747-5198
- Publication type
Article
- DOI
10.3184/174751911X13073872921614