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Updated: May 25, 2026
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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
4-[(Hy-droxy)(4-methyl-phen-yl)methyl-idene]isochroman-1,3-dione
Abstract:
In the title compound, C(17)H(12)O(4), the six-membered heterocyclic ring adopts a distorted screw-boat conformation. The mol-ecular structure exhibits an S(6) ring motif, owing to an intra-molecular O-H⋯O hydrogen bond. In the crystal, weak C-H⋯O contacts generate an infinite chain along the c axis. There are also π-π stacking inter-actions between neighbouring isochromanedione benzene rings, with a centroid-centroid distance of 3.755 (1) Å, and C-O⋯π inter-actions with an O⋯centroid distance of 3.964 (2) Å.
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