REACTIONS OF GROUP-14 METALLOCENES WITH LITHIATED PRIMARY AMINES - ALTERNATIVE PATHWAYS IN THE FORMATION OF THE PRIMARY TRIS(AMIDO)STANNATE[(MANH)SN(NHMA)(2)LI.2THF]1 AND THE CUBANES [E(NCY)](4) (E=SN2, PB3 MA=(2-MEO)C6H4, CY=C6H11)
Re. Allan et al., REACTIONS OF GROUP-14 METALLOCENES WITH LITHIATED PRIMARY AMINES - ALTERNATIVE PATHWAYS IN THE FORMATION OF THE PRIMARY TRIS(AMIDO)STANNATE[(MANH)SN(NHMA)(2)LI.2THF]1 AND THE CUBANES [E(NCY)](4) (E=SN2, PB3 MA=(2-MEO)C6H4, CY=C6H11), Journal of organometallic chemistry, 550(1-2), 1998, pp. 71-76
Two alternative reaction pathways have been identified in the nucleoph
ilic substitution reactions of Group 14 metallocenes with lithiated pr
imary amines [RNHLi]. These are exemplified by the syntheses and struc
tures of the tris(amido)stannate [(MANH)Sn(mu-NHMA)(2)Li.2THF] 1, obta
ined by the reaction of [(MA)NHLi] with [Cp2Sn] (MA = 2-MeOC6H4), and
the cubanes [E(NCy)](4) (E = Sn 2, Pb 3; Cy = C6H11), prepared from [C
yNHLi] and [Cp2E]. The latter furnishes a new route to Group 14 imido
cubanes. (C) 1998 Elsevier Science S.A.