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Stable Core-Modified Doubly N‑Fused Expanded Dibenziporphyrinoids
We
describe one-pot synthesis of stable doubly N-fused expanded
dibenziporphyrinoids using readily available precursors under acid-catalyzed
conditions. The doubly N-fused expanded dibenziporphyrinoids have
been synthesized by adopting an inversion followed by fusion strategy.
The studies showed that the dibenziporphyrinoids undergo mono fusion
initially, but due to the high stability of doubly fused dibenziporphyrinoids,
the monofused macrocycles undergo further fusion to form doubly fused
dibenziporphyrinoids. The mono fusion and double fusion in these dibenziporphyrinoids
were established by X-ray crystallography