ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 12, Number 2
JKCSEZ 12(2)
April 20, 1968 

Chlorination of aromatic derivatives under UV light and γ-ray irradiation was studied. Ethyl α,β-dichloro-β-phenyl propionate gave the p-chlorophenyl derivatives when chlorination was done under UV light. The same type of the product was obtained in the reaction where the mole ratio of the ester and chlorine was 1 to 2 and the chlorination was done under γ-ray irradiation. When the mole ratio of the ester and chlorine was 1 to 8, the chlorination reaction under γ-ray irradiation gave a poly-chlorinated derivatives which was identified as a side chain chlorinated p-chlorophenyl derivatives. Ethyl α,β-dichloro-β-(p-chlorophenyl) propionate gave the same type of the side chain chlorinated p-chloro derivatives by the chlorination under γ-ray irradiation, whereas ethyl α,β-dichloro-β-(o-chlorophenyl) derivatives gave o,p-dichlorophenyl derivatives. The identifications of the products were based on a radio thin layer chromatography and activation analysis of chlorine contents of product. The chlorination reaction was discussed in regards to the effect of phenyl substituents to the formation of reaction product and the procedures were described.