SEARCH Articles Figures Tables 1- Acetylpyrrole 1- Acetylpyrrole 2-Acetylpyrrole, formation 2-Methyl-3-acetylpyrrole 2.4- dimethyl-3-acetylpyrrole A-Acetylpyrrole, 1,2-sigmatropic shift A-Acetylpyrrole, 1,2-sigmatropic shift photorearrangement