Adamantanes bearing gem-dinitro groups on bridge carbons were synthesized from oximin badamantanes by reaction with nitric acid, or alternatively, by reaction with aqueous hypobromite, reduction of the intermediate gem-bromonitroadamantanes, and oxidative nitration. Reaction of oximinoadamantanes with: ypochlorous acid gave anomolous gem- dichloro compounds instead of chloronitro derivatives. The presence o two gem-dinitro ...