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Preparation of 14C2-cis-1,2-dichloroethylene from 14C2-trichloroethylene using a cobalt porphyrin catalyst

✍ Scribed by Todd D. DeJournett; Joseph M. Fritsch; Kristopher McNeill; William A. Arnold

Publisher: John Wiley and Sons
Year: 2005
Tongue: French
Weight: 116 KB
Volume: 48
Category: Article
ISSN: 0022-2135
DOI: 10.1002/jlcr.929

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✦ Synopsis

A protocol for producing 14 C 2 -cis-1,2-dichloroethylene ( 14 C 2 -cis-DCE) from 14 C 2trichloroethylene ( 14 C 2 -TCE) was developed as an economical alternative to commercial, custom synthesis of 14 C 2 -cis-DCE. The method uses 5,10,15,20tetrakis-(4-carboxyphenyl) porphyrin cobalt(II) as a catalyst in the presence of titanium(III) citrate to convert 14 C 2 -TCE to 14 C 2 -cis-DCE as shown in Figure 1. A purge-and-trap technique was used to isolate 14 C 2 -cis-DCE to provide a methanolic stock solution of high purity (97% cis-DCE). The overall 14 C 2 -cis-DCE yield of the process was approximately 53%.

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