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Communication | Regular issue | Vol 6, No. 1, 1977, pp.1-4
Published online, 1st January, 1970
DOI: 10.3987/R-1977-01-0001
Photochemical Synthesis of 2-Phenylpyrroles by the Cyclization of β-Aminovinyl Ketones

Takehiko Nishio and Yoshimori Omote*

*Department of Chemistry, University of Tsukuba, 1-1-1 Ten-nodai, Tsukuba-shi, Ibaraki, 305-8571, Japan

Abstract

On irradiation, β-aminovinyl phenyl ketones (1) having such substituents as CH3, OCH3, and Cl on the phenyl ring cyclize to give pyrrole derivatives (2), except β-aminovinyl ρ-biphenyl ketone (1h). Also exocyclic β-aminovinyl ketone (3 and 4) are inert. The photochemical behavior of (1) is discussed in relation with that of aryl alkyl ketone.