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Porphyriynes: 18-π-Conjugated Macrocycles Incorporating a Triple Bond.

Fei HaoTian ZhangDonghai YuXiaodeng YangHua-Wei JiangJi-Chang XiaoQing-Yun Chen
Published in: Organic letters (2022)
Tetraphenylporphyriyne ( Pyne1 ), a novel porphyrin analogue with a C≡C bond incorporated into an 18-π-conjugated system, has been created via cleavage of the N-confused pyrrolic ring in Ag(III) N-confused tetraphenylporphyrin. The structure of Pyne1 was confirmed by X-ray crystallography and 1 H NMR, IR, and UV-vis spectroscopy. The mechanism of cleavage of the N-confused pyrrolic ring was investigated by theoretical calculations. The successful synthesis of other Pynes indicated the generality of this protocol.
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