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Synthesis and properties of 1,1′-methylene-2,2′-dipyrrolyl ketone

✍ Scribed by J. A. de Groot; J. H. Koek; J. Lugtenburg

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
423 KB
Volume
100
Category
Article
ISSN
0165-0513

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✦ Synopsis

Abstract

1,1′‐methylene‐2,2′‐dipyrrolyl ketone can be conveniently prepared in high yield, starting from pyrrole, in three steps. It shows extreme properties that are not observed in comparable rigid ketone systems. These chemical and physical properties can be explained assuming mesomeric forms with charge separation resulting from the electron rich pyrrole rings and the rigidity of the system. The fluorescence quantum yield is 0.07 and the fluorescence lifetime is 27 ns.

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