SEARCH Articles Figures Tables 5- Acetyl-2-ethyl Ethyl acetylation Pyrrole 3 - acetyl - 2 - methyl - 4 - -, ethyl ester Pyrrole acetylation Pyrrole-3-carboxylic acid, 4-acetyl-1-panisyl-5-methyl ethyl ester Pyrroles 3-methyl