Ethyl methacrylate
= Ethyl methacrylate
{title2=$\mathrm{CH_2{=}C(Me)CO_2Et}$}
$\mathrm{CH_2{=}C(Me)CO_2Et}$, an alpha-methyl-substituted acrylate. Conjugate addition installs a chain whose <carbon> next to the <ester> retains the methyl substituent.