77861-50-8Relevant academic research and scientific papers
Synthesis of bulky tris[(dimethyl(alkyl/aryl)silyl)methyl]stannanes as radical based reducing agents
Hassan, Abdalla E.A.,El-Farargy, Ahmed F.,Mitchell, Terence N.
scheme or table, p. 2971 - 2975 (2011/09/15)
The synthesis of novel bulky tris[dimethyl(ethyl/benzyl/p-tolyl/α- naphthyl)silylmethyl]stannanes (1-4) is described. Alkylation of SnCl 4 with Me2(ethyl/p-tolyl)SiCH2MgBr (10-11) gave mainly the triorganotin chlorides [(Me2(ethyl/p-tolyl)SiCH 2)]3SnCl 14 and 15, which were isolated by silica gel chromatography. Reduction of 14 and 15 with LiAlH4 in THF gave the corresponding triorganotin hydrides 1 and 2, respectively. [Me 2(benzyl/α-naphthyl)SiCH2]3SnCl 16 and 17, generated by the alkylation of SnCl4 with Me2(benzyl/ α-naphthyl)SiCH2MgBr 12 and 13, were inseparable from the minor product [Me2(benzyl/α-naphthyl)SiCH2] 2SnCl2 18 and 19, respectively. Treatment of the mixtures of 16/18 and 17/19 with NaOH furnished the corresponding mixtures of stannoxanes, from which the hexakisdistannoxanes [Me2(benzyl/α- naphthyl)SiCH2]6Sn2O 20 and 22 were isolated from the minor dialkyltin oxide derivatives [Me2(benzyl/α- naphthyl)SiCH2]2SnO in good yields. Reduction of 20 and 22 with BH3 in THF gave [Me2(benzyl/α-naphthyl) SiCH2]3SnH (3 and 4), respectively in good yields. 1H, 13C, 119Sn, 29Si NMR characteristics of the newly synthesized compounds are included.
BASE CLEAVAGE OF THE BENZYL-SILICON BOND IN PhCH2SiMe2(CH2)nOH (n = 2 or 3) COMPOUNDS
Eaborn, Colin,Mahmoud, Foad M.S.
, p. 13 - 16 (2007/10/02)
The compounds PhCH2SiMe2(CH2)nOH with n = 2 or 3 are cleaved 0.75 and 95-135 times, respectively, as readily as PhCH2SiMe3 by NaOMe/MeOH at 50 deg C.The high reactivity of the compound with n = 3 may arise from intramolecular attack of the alkoxide centre
