The Journal of Organic Chemistry

Studies on selective preparation of aromatic compounds. 20. Selective preparation of 2-mono-and 2, 2'-disubstituted biphenyl using the tert-butyl group as a positional …

M Tashiro, T Yamato

Index: Tashiro,M.; Yamato,T. Journal of Organic Chemistry, 1979 , vol. 44, p. 3037 - 3041

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Citation Number: 44

Abstract

The tert-butyl group is an important positional protective function in the selective preparation of aromatic compounds, since it can be introduced on aromatic rings by Friedel-Crafts tert- butylation and its removal can be easily carried out by transalkylation and dealkylation. Biphenyls 2-methyl-(4a), 2-bromo-(4b), 2-iodo-(4d), 2-nitro-(4e), 2-amino-(4f), 2, 2'-dibromo- (7a), 2, 2'-dichloro-(7b), 2, 2'-dinitro-(7d), and 2, 2'-diamino-4, 4'-ditert-butylbiphenyl (7e) ...