Synthesis, structure and π-expansion of tris(4,5-dehydro-2,3:6,7-dibenzotropone)
2025

New Synthesis of a Carbon Compound

publication Evidence: moderate

Author Information

Author(s): Xiong Yongming, Ma Xue Lin, Su Shilong, Miao Qian, Mateo-Alonso Aurelio

Primary Institution: The Chinese University of Hong Kong

Hypothesis

Can a new synthesis method for tris(4,5-dehydro-2,3:6,7-dibenzotropone) be developed using a Ni-mediated Yamamoto coupling reaction?

Conclusion

The study successfully developed a new synthesis method for tris(4,5-dehydro-2,3:6,7-dibenzotropone) and identified its crystal forms.

Supporting Evidence

  • The new synthesis method was developed using a Ni-mediated Yamamoto coupling reaction.
  • The compound crystallized into two different polymorphs with distinct symmetries.
  • The π-expansion of the compound was achieved through Barton–Kellogg and Scholl reactions.

Takeaway

Scientists found a new way to make a special carbon compound and discovered it can form different crystal shapes.

Methodology

The compound was synthesized using a Ni-mediated Yamamoto coupling reaction and analyzed through X-ray crystallography.

Limitations

The reactions for expanding the π-skeleton of the compound were not always successful, leading to complex mixtures.

Digital Object Identifier (DOI)

10.3762/bjoc.21.1

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