“…Bis(fluoro-diisopropylsilyl)amine I reacts with LiC 4 H 9 in a molar ratio 1 : 1 to give the lithium-derivatives II, (iPr 2 SiF) 2 NLi and with LiOSiMe 3 in a molar ratio 1 : 2 to give the bis(siloxy)amine III, (iPr 2 SiOSiMe 3 ) 2 NH. The heterocycles IV: HN(SiiPr 2 NPh) 2 , V: HN(SiiPr 2 O) 2 SiiPr 2 , VI: HN(SiiPr 2 NCH 2 ) 2 , and VII: HN(SiiPr 2 OCH 2 ) 2 are obtained in the reaction of I with dilithiated N,N'-diphenylhydrazine (IV), disodiated diisopropylsilanediol (V), dilithiated N,N'-dimethylethylendiamine (VI), and disodiated ethylen glycol (VII). Treatment of III, IV and V with LiC 4 H 9 yields the lithium-derivatives VIII: LiN(SiiPr 2 OSiMe 3 ) 2 , IX: LiN(SiiPr 2 NPh) 2 , and X: LiN(SiiPr 2 O) 2 SiiPr 2 .…”