Johnson-Claisen rearrangement
= Johnson-Claisen rearrangement
{c}
An allylic alcohol reacts with an orthoester under weak-acid catalysis to give a <ketene acetal>, which rearranges to an unsaturated <ester>.
= Johnson-Claisen rearrangement
{c}
An allylic alcohol reacts with an orthoester under weak-acid catalysis to give a <ketene acetal>, which rearranges to an unsaturated <ester>.