The insertion of ArNC (Ar = 2,6-Me2C6H3) or ButNC into the LiâC bond of [LiC(H)(R)Râ²}] (R = SiMe3, Râ²Â = R or Ph) led to (i) the lithium 1-azaallyls [LiN(Râ³)C(R)C(H)Râ²}(tmen)] (6a Râ²Â = R, Râ³Â = Ar; 6b Râ²Â = Ph, Râ³Â = Ar; 6c Râ²Â = Ph, Râ³Â = But), (ii) the lithium β-diketiminates [LiN(But)C(R)C(H)C(R)NBut}][(LiCHR2)(CNBut)] 1, LiN(Ar)C(R)C(H)C(R)N(Ar)}
2 and [LiN(Ar)C(R)C(H)C(Ph)N(R)}(tmen)] 7 (from 6a and PhCN), or (iii) the lithium amide [LiN(Ar)C(R)C[N(Ar)]C(H)Ph}(tmen)] 8. Treatment of the lithium β-diketiminates 1 and 2 with ZrCl4 yielded the complexes [ZrCl3N(But)C(R)C(H)C(R)NBut}] 3 or [ZrN(Ar)C(R)C(H)C(R)N(Ar)}Cl2(μ-Cl)2Li(OEt2)2] 4, while reaction of the lithium compounds 2 or 8 with MeOH gave in high yield the conjugate acids of the corresponding anions [HN(Ar)C(R)C(H)C(R)NAr] 5 or [HN(Ar)C(R)CN(Ar)}C(H)Ph] 9. Each of the compounds 1â9 was fully characterised by multinuclear NMR spectroscopy, mass spectrometry and microanalysis, while X-ray diffraction data are also provided for the complexes 4, 6b and 8.
将 ArNC(Ar = 2,6-Me2C6H3)或 ButNC 插入[LiC(H)(R)Râ²}](R = SiMe3,Râ²Â = R 或 Ph)的 LiâC 键导致 (i) 1-氮杂烯
丙基锂[LiN(Râ³)C(R)C(H)Râ²}(tmen)](6a Râ²Â = R,Râ³Â = Ar;6b Râ²Â = Ph, Râ³Â = Ar;6c Râ²Â = Ph, Râ³Â = But),(ii) δ-二
酮酸锂[LiN(But)C(R)C(H)C(R)NBut}][(LiCHR2)(CNBut)] 1、LiN(Ar)C(R)C(H)C(R)N(Ar)} 2 和 [LiN(Ar)C(R)C(H)C(Ph)N(R)}(tmen)] 7(由 6a 和 PhCN 制得),或 (iii)
锂酰胺 [LiN(Ar)C(R)C[N(Ar)]C(H)Ph}(tmen)] 8。8.用 ZrCl4 处理δ-二酮
亚胺锂 1 和 2,可得到络合物 [ZrCl3N(But)C(R)C(H)C(R)NBut}] 3 或 [ZrN(Ar)C(R)C(H)C(R)N(Ar)}Cl2(δ-Cl)2Li(OEt2)2] 4、而将
锂化合物 2 或 8 与 MeOH 反应,可以高产率地得到相应阴离子的共轭酸 [HN(Ar)C(R)C(H)C(R)C(R)NAr] 5 或 [HN(Ar)C(R)CN(Ar)}C(H)Ph] 9。每种化合物 1â9 都通过多核核磁共振光谱、质谱和显微分析进行了全面表征,同时还提供了复合物 4、6b 和 8 的 X 射线衍射数据。