- Preparation of enol ethers
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A process for the preparation of enol ethers of the general formula I STR1 in which R1,R2,R3,R4,R5 denote C1 -C20 alkyl, C1 -C20 alkenyl, or C7 -C20 phenylalkyl, R2,R3,R4 denote hydrogen, aryl, cyano, --COOR5, C1 -C12 alkyl monosubstituted to trisubstituted or interrupted by --COOR5, --C=O, cyano, or C1 -C12 alkoxy, C1 -C12 alkyl monosubstituted to trisubstituted by --COOR5, --C=O, cyano, or C1 -C12 alkyl, or C7 -C20 phenylalkyl and R2 and R4 or R3 and R4 together form a C3 -C10 alkylene chain or a C2 -C20 alkylidene chain, from acetals or ketals.
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- SYNTHESIS OF VINYL ETHERS BY HOMOLOGATION OF ALDEHYDES VIA RADICAL REDUCTIVE ELIMINATION
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Methoxyphenylthiomethyllithium 1 reacts with aldehydes to give adducts which are then transformed into xanthates.These compounds, by reaction with tri-n-butylstannane, afford vinyl ethers in good yields.
- Vatele, Jean-Michel
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p. 5997 - 6000
(2007/10/02)
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