Olefin Metathesis (exchange of substituent grps)
Reagents: ethers (diethyl ether or THF)
frequently on epoxides, carbonyl grps
a C-H 3 atoms away leads to an internal transfer of a proton to the C=O
acid catalyzed keto-enol conversion
protonation onboxygen, then remivalbof proton from alpha carbon
base catalyzed keto-enol conversion
removal of proton from alpha carbon followed by protonation on oxygen
don't react with NaCl or NaBr (halogen ions are weaker bases than acetate),
rxns are facilitated by catalysts
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