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Citation: Chen Yuanyin, Luo Jieqi, Lu Xueran. CROWN ETHER-CONTAINING ORGANOSILICON COMPOUNDS Ⅲ. HYDROSILYLATION OF ALKENYLOXYMETHYL 15-CROWN-5 AND 18-CROWN-6[J]. Chinese Journal of Applied Chemistry, ;1989, 6(6): 16-21. shu

CROWN ETHER-CONTAINING ORGANOSILICON COMPOUNDS Ⅲ. HYDROSILYLATION OF ALKENYLOXYMETHYL 15-CROWN-5 AND 18-CROWN-6

1.
Department of Chemistry, Wuhan University, Wuhan

Received Date: 26 January 1989
Available Online: 22 May 1989

A convenient method for preparing alkenyloxymethyl crown ethers by cyclization of the corresponding substituted oligoethylene glycols with triethylene glycol ditosylate in high yield is described. The alkenyloxymethyl crown ethers, i.e. γ-allyloxymethyl 15-crown-5 & 18-crown-6, ω-undecenyloxymethyl 15-crown-5 & 18-crown-6, were subjected to hydrosilylation by triethoxysilane in the presence of tetrakis(triphenylphosphine) platinum complex,followed by immobilization on fumed silica or cohydrolysis with tetraethoxysilane to give the silica-bound polysiloxane-supported 15-crown-5, 18-crown-6, or 15-crown-5, 18-crown-6-containing silicon resins,respectively.They exhibited high complexation capacities for sodium and potassium picrate and high phase transfer catalytic activity for the anionpromoted nucleophilic substitution of n-nonyl bromide by sodium or potassium iodide.Their complexation capacities and catalytic efficiency depend on the kinds of cation in iodides, the kinds of crown ether, and the length of the spacer group. They also possessedhigh thermostability.
- Supported crown ether,
- Alkenyloxymethyl crown other,
- Polysiloxane,
- supported crown ether,
- Complexation capacity,
- Phase transfer catalysis
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CROWN ETHER-CONTAINING ORGANOSILICON COMPOUNDS Ⅲ. HYDROSILYLATION OF ALKENYLOXYMETHYL 15-CROWN-5 AND 18-CROWN-6

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com