Abstract A new route for the synthesis of 2, 4, 5, 6-tetrachloroisophthalic and 2, 3, 5, 6- tetrachloroterephthalic aldehydes from the corresponding tetrachlorobenzenes was developed. The method involves dichloromethylation of the initial compounds with chloroform in the presence of aluminum chloride and subsequent hydrolysis of the resulting 1, 3-bis (dichloromethyl)-2, 4, 5, 6-tetrachlorobenzene and 1, 4-bis (dichloromethyl)-2, 3, 5 ...
[Leyden, Richard N.; Loonat, Mohamed S.; Neuse, Eberhard W.; Sher, Brian H.; Watkinson, Walter J. Journal of Organic Chemistry, 1983 , vol. 48, # 5 p. 727 - 731]
