Synthesis and conversions of polyhedral compounds 20. Synthesis of certain derivatives of 3,7-diazabycyclo[3.3.1]nonane

1,3-Diazaadamantanes containing hydrogen atoms or a hydroxyl or oxime group at C(6), under the action of 2 moles of aralkyl halides, are converted in alkaline aqueous media to 3,7-diaralkyl-3, 7-diazabi cyclo(3.3.1]nonanes containing the indicated groups at C(9). Analogously, quaternary salts of 1,3-diaza-adamantanes containing hydrogen atoms or a hydroxyl group at C(6) are converted in an alkaline aqueous medium to the corresponding 3-alkyl-3,7-diazabicyclo[3.3.1]nonanes containing the indicated groups at C(9).