Formation of Vinylic Dipyrroles by the Deprotonation of meso-Alkyl and meso-Benzyl Dipyrrin HCl Salts
The Journal of Organic Chemistry2009Vol. 74(7), pp. 2866–2869
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Abstract
Under basic conditions, dipyrrin salts bearing alkyl and benzyl groups at the meso-position undergo deprotonation to give vinylic dipyrroles, rather than the corresponding free-base dipyrrins. The deprotonation is reversible and quantitatively returns the dipyrrinato framework under acidic conditions.
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