| 摘要 |
1,144,214. Chlorostyrenes and homologues thereof. BADISCHE ANILIN- & SODAFABRIK A.G. 28 June, 1966 [29 June, 1965], No. 28922/66. Heading C2C. [Also in Division C5] Chlorine nuclear-substituted C 2 -C 4 alkyl benzenes are dehydrogenated with O 2 at 400-700‹ C. in the presence of iodine and an inert heat carrier which has an internal surface area of 0À1 to 15 sq. m./g. and a mean pore size of 300-30,000 Š to give chlorostyrenes. In Example 8 1.ethyl-2,5-dichlorobenzene is converted to dichlorostyrene and in Example 9 1 - ethyl - 2,4,6 - triohlorobenzene is converted to trichlorostyrene.
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