Triptycene cyclopentenedione

Triptycene cyclopentenedione 47 underwent 1,3-DC with nitrile oxides affording polycyclic isoxazolines 48 bearing the triptycene moiety. The adducts 48 exist in solution in their two enolic forms 49 and 50, in equimolecular amounts <02JOC4612>. 

Spyroudis S, Xanthopoulou N. Triptycene quinones in synthesis preparation of triptycene cyclopentenedione and its reactivity as a dienophile. J. Org. Chem. 2002 67 4612-4614. 

---

See also in sourсe #XX -- [ ]

---