Negative substituents in the claisen rearrangement
作者:C.G. Krespan
DOI:10.1016/s0040-4020(01)88821-9
日期:1967.1
instances of the Claisen rearrangement are demonstrated with allyl vinyl ethers in which the vinyl segment is heavily substituted with negative groups. With fluoro, fluoroalkyl, chloro and alkoxy as negative substituents, these reactions proceed with unusual ease at 25–100°. A related isomerization of a propargyl vinyl ether to an allenyl ketone is also described.
Copolymerizable fluorinated compounds, a process for their preparation
申请人:Bayer Aktiengesellschaft
公开号:US05313003A1
公开(公告)日:1994-05-17
A 2-allyl-perfluoroalkyl-trifluorovinyl ether of the formula ##STR1## wherein R.sup.1.sub.F and R.sup.2.sub.F represent either --CF.sub.3 or, together, (CF.sub.2).sub.n where n=2 or 3.