C am~ aigne~~ used a similar sequence to prepare 3-alkoxy-Barylpyrroles. A second method uses enamino esters derived from ethyl acetoacetate which are acylated with chloroacetyl chloride followed by a Dieckmann ring closure to give 3-hydroxypyrroles which can be 0-methylated (eq 2). 5 Similarly, Baue@ formed enamino esters from P-keto
