Formaldehyde → 4-Ethoxycarbonylmethoxy-2-methylene-butanal

Participants

Reaction Steps

11 g (63.1 mmol) of 4-ethoxycarbonylmethoxybutanal, 5.8 g (71.4 mmol) of dimethylammonium chloride and 5.5 ml (73.5 mmol) of a 37% solution of formaldehyde are stirred for 1 hour at a bath temperature of 110° C. The reaction mixture is allowed to cool and extracted three times with CH2Cl2. The combined organic phases are dried over Na2SO4 and concentrated by evaporation giving 4-ethoxycarbonylmethoxy-2-methylene-butanal as a yellowish liquid which is further reacted without purification.

Provenance & Evidence