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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
(E)-4-(β-d-Allopyran-os-yloxy)cinnamyl 4-bromo-phenyl ketone ethanol solvate
Xiu-Juan Yin1, Xue Bai, Lei Zheng
1College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
Abstract:
The title compound, C(21)H(21)BrO(7)·C(2)H(6)O, was synthesized by the Claisen-Schimidt reaction of helicid (systematic name: 4-formyl-phenyl-β-d-allopyran-oside) with 4-bromo-aceto-phenone in ethanol. The pyran ring adopts a chair conformation. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-H⋯O hydrogen bonds.
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