adj-Dicarbachlorin, the first free base carbaporphyrinoid system with an internal methylene unit†
Abstract
Base-catalyzed condensation of dicyclopentadienylmethane with a dipyrrylmethane dialdehyde gave a dicarbachlorin with an internal CH2 group. This unusual porphyrinoid retained highly diatropic characteristics and exhibited a porphyrin-like UV-vis spectrum.
 
                



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