Reaktionsgleichung
[CH2:1]([CH:3]([CH2:6][CH2:7][CH2:8][CH3:9])[CH2:4][Mg])[CH3:2].C([CH:12]([CH2:15][CH2:16][CH2:17][CH3:18])[CH2:13]Br)C.BrC1C=CC=CC=1>>[CH2:1]([CH:3]([CH2:6][CH2:7][CH2:8][CH3:9])[CH2:4][C:13]1[CH:12]=[CH:15][CH:16]=[CH:17][CH:18]=1)[CH3:2]Komponenten
Versuchsvorschrift
19.3 g of 2-ethylhexyl-magnesium prepared from 2-ethylhexyl bromide, are reacted with 15.7 g of bromobenzene in the presence of a catalyst based on bis[bis(diphenylphosphionethane]palladium(0). 19 g of 2-ethylhexyl-benzene thus obtained were dissolved in 60 ml of an equal volume mixture of trifluoroacetic acid and anhydride maintained at 0° C. under stirring, to which 3.5 g of sodium iodide and 4.2 g of iodic anhydride are added. The solvent is removed with a rotary evaporator. Then the residual product is dissolved in 30 ml of acetonitrile and poured in 200 ml of water containing 10 g of sodium acetate and 2 g of sodium sulfite and 14 g of potassium bis-fluorosulfonylimide. The organic phase is extracted with dichloromethane and washed with water. The solvent is eliminated by means of a rotary evaporator to leave an oily liquid of bis-fluorosulfonylimide of bis-[4-(2-ethylhexyl)]phenyl-iodonium. This ionic compound presents characteristics of solubility in hydrocarbons and silicon oils comparable to those of compounds with longer alkyl chains such as bis(dodecylbenzene) iodonium associated to the anion PF6-. It has a lipophilic character more noticeable than that of the compound of Example 3. It is particularly advantageous to catalyze the cross-linking of antiadhesive silicon coating and the polymerization of the monomers of low polarity such as cyclohexanedimethanoldivinylether, 2-ethylhexylglycidylether or 2-ethylhexylvinylether.
Quellen und Nachweise
- ORD-Eintrag
- ord-9c5587d0b8544f68968c425961994b16
- Quelldatensatz
- uspto-grants-1999_12
- Patentnummer
- US06008265
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