Alkyl Vinyl Ether

In the crown ether complex the metal ion fits into the cavity of the crown ether and is solvated by the oxygen atoms.

Alkyl vinyl ether. Many inorganic salts can be made soluble in nonpolar organic solvents by complexing them with an appropriate crown ether. Discuss 1 alkyl vinyl ether chemical compound 0 000 title claims abstract description 32. In these materials the ether groups are pendant from the polymer backbone. Previous approaches toward stereoselective vinyl ether polymerizations have exclusively relied on chain end control to dictate facial addition to the propagating oxocarbenium ion which has provided access to isotactic pves in specific cases but is not general to alkyl vinyl ether monomers as a class 13 19.

With 2 substituted alkyl vinyl ethers 4g and 4h the reactions did not proceed at 78 c. The vinyl carbonate 13 152 gives only copolymerization the ketene acetal 11 153 and the methyl vinyl ether 14 152 give both copolymerization and chain transfer in styrene polymerization whereas with the benzyl vinyl ethers 12 153 15 8 and 16 18 151 chain transfer is the only reaction detected. 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. Krytox is a grease generated by the polymerization of hexafluoropropylene oxide.

The ether groups are integral to the polymer chain. Methyl vinyl ether is an organic compound with the chemical formula ch 3 och ch 2 a colorless gas it is the simplest enol ether it is used as a synthetic building block as is the related compound ethyl vinyl ether a liquid at room temperature. Their chemical formula is f cf cf 3 cf 2 o n cf 2 cf 3. The alkyl groups in the alkyl vinyl ethers had only a small influence on the diastereoselectivity.

229920001577 copolymers polymers 0 000 title claims abstract description 23. Pentafluorophenyl alkyl and vinyl ethers author. Pummer and leo a.