ethyl 1-(2,4-dimethoxybenzyl)-4-oxo-2-azetidine-carboxylate

1-(2,4-dimethoxy-benzyl)-4-(mesyloxymethyl)-2-azetidinone

Diethyl 1-(2,4-dimethoxybenzyl)-4-oxo-2,2-azetidine-dicarboxylate

diethyl N-(2,4-dimethoxy-benzyl)-N-(chloroacetyl)-amino-malonate

1,3-bis-(trichloroacetyl)-2-(2,4-dimethoxyphenyl)-4-imidazoline