1361927-46-9Relevant academic research and scientific papers
Syntheses and reactions of derivatives of (Pyrrolylaldiminato)germanium(II) and -aluminum(III)
Yang, Ying,Zhao, Na,Zhu, Hongping,Roesky, Herbert W.
, p. 1958 - 1964 (2012)
(Pyrrolylaldiminato)germanium(II) chloride, LGeCl (1), was prepared by reacting LLi (L = 2-(ArN=CH)-5-tBuC4H2N; Ar = 2,6-iPr 2C6H3) with 1 equiv of GeCl2? (dioxane). Treatment of LGeCl (1) with KOtBu or LiN(H)Ar yielded LGeR (R = OtBu (2), N(H)Ar (3)) by halide metathesis. (Pyrrolylaldiminato)methylaluminum chloride, LAlMe(Cl) (4), was obtained from the reaction of LLi and MeAlCl 2 or by treating LH with Me2AlCl in toluene. Treatment of LH with Me2AlCl or AlCl3 in Et2O at -18 °C resulted in the 1:1 adducts LH?AlMe2Cl (5) and LH?AlCl 3 (5′), respectively. Further reaction of 4 with 2 equiv of LiNEt2 led to the insertion of the NEt2 group into the C=N bond together with the elimination of LiCl, to afford L′(NEt 2)AlMe(NEt2)Li(THF) (6). Similarly, treatment of 4 with 2 equiv of LiPPh2(THF)2 gave L′(PPh 2)AlMe(OC4H8-PPh2)Li(THF) 2 (7) accompanied by ring opening of THF. Single-crystal X-ray structure determinations revealed that 3 and 4 each contained enantiomeric pairs, while 6 and 7 each adopted a single enantiomer.
