Abstract
1. Under the action of ferric chloride, 3,3,3- and 1,1,3-trichloropropenes both form the same dimer-1, 1,5,5,5-pentachloro-4-(chloromethyl)-1-pentene- or the product of its dehydrochlorination- 1,1,5,5-tetrachloro-2-(chloromethyl)-1, 4-pentadiene-depending on the reaction conditions. These trichloropropenes react also with 2,2-dichlorovinyl compounds in presence of ferric chloride. Thus, from 1,1,5-trichloro-1-pentene 1,1,5,5,5-penta-chloro-4-(3-chloropropyl)-1-pentene and 1,1,5,5-tetrachloro-2-(3-chloropropyl)-1,4-pentadiene were obtained, and from 1,1,7-trichloro-1-heptene 1,1,5,5-tetrachloro-2-(5-chloropentyl)-1,4-pentadiene was obtained. 2. The hydrolysis of the products by heating them with 93–95% sulfuric acid leads to the formation of 2-substituted glutaric acids in good yields.
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