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

Beteiligte Stoffe

Reaktionsschritte

Analogously to Step 8.1, 14.5 g (87 mmol) of 2-amidino-acetic acid ethyl ester hydrochloride 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-(2-methoxy-phenyl)-ethan-1-one (2-bromo-2'-methoxy-acetophenone; Aldrich; Milwaukee/USA) to form the title compound; m.p.: 128° C.; TLC-Rf =0.25 (hexane/ethyl acetate [2:1]).

Herkunft & Nachweise