2-Nitrotoluene → alpha-Bromo-2-nitrotoluene

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Even the side-chain brominations of o-nitrotoluene in a carbon tetrachloride/water mixture using elementary bromine and under UV-irradiation, which have been described recently in German Democratic Republic patent specifications Nos. 74279 and 82463, provide only o-nitrobenzyl bromide in a yield of 45 to 55%. The process described in German Democratic Republic patent specification 118609 affords a somewhat better yield when o-nitrotoluene is brominated in carbon tetrachloride under irradiation with visible or ultra-violet light or using peroxide as catalyst; but in this process too it was not possible to obtain either o-nitrobenzal bromide or a complete sidechain bromination of o-nitrotoluene to yield o-nitrobenzyl bromide.

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