Alkyl Vinyl Ether. Many inorganic salts can be made soluble in nonpolar organic solvents by complexing them with an appropriate crown ether. A tetrafluoroethylene perfluoro alkyl vinyl ether copolymer in which heat unstable carbinol end groups ch 2 oh groups present have been protected against heat degradation by treating the copolymer with nh 3 or nh 3 producing compounds. Their chemical formula is f cf cf 3 cf 2 o n cf 2 cf 3.
The exterior of the complex is nonpolar masked by the alkyl groups of the crown ether. Although the reaction with the 1 substituted alkyl vinyl ether 4f also afforded the acetal products in high yields the dr was very low entry 6.
With 2 substituted alkyl vinyl ethers 4g and 4h the reactions did not proceed at 78 c.
In the crown ether complex the metal ion fits into the cavity of the crown ether and is solvated by the oxygen atoms. Pentafluorophenyl alkyl and vinyl ethers author. Krytox is a grease generated by the polymerization of hexafluoropropylene oxide. The exterior of the complex is nonpolar masked by the alkyl groups of the crown ether.
