Bromomethyl 3-methoxyphenyl ketone → 2-Amino-3-ethoxycarbonyl-5-(3-methoxy-phenyl)-1H-pyrrole

Participants

Reaction Steps

Analogously to Step 8.1, 14.5 g (87 mmol) of 2-amidino-acetic acid ethyl ester hydro-chloride in 150 ml of abs. ethanol are reacted with 5.9 g (87 mmol) of sodium ethanolate and 10.3 g (44 mmol) of 2-bromo-1-(3-methoxy-phenyl)-ethan-1-one (2-bromo-3'-methoxy-acetophenone; Janssen) to form the title compound; m.p. 96-97oC; TLC-Rf =0.2 (hexane/ethyl acetate [2:1]).

Provenance & Evidence