Spirans XXII. Synthesis of 4,4-dialkyl-4-germacyclohexanone and 8,8-dialkyl-8-germaazaspiro [4.5] decanes

4,4-Dialkyl-4-germacyclohexanones have been synthesized and their reactions studied. The diethyl ketone has been converted into N-(-dimethylaminopropyl)-2 aza-8,8-diethyl-8-germaspiro[4.5]decane (16). The biological properties of 16 have been examined in some detail. The reactions of this new ketone with some other reagents are reported.