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Updated: May 31, 2026

Metal-free Synthesis of Ynones from Acyl Chlorides and Potassium Alkynyltrifluoroborate Salts
Published on: February 24, 2015
2,3-Dibromo-3-phenyl-1-(3-phenyl-sydnon-4-yl)propan-1-one
Abstract:
IN THE TITLE COMPOUND [SYSTEMATIC NAME: 4-(2,3-dibromo-3-phenyl-propano-yl)-3-phenyl-1,2,3-oxadiazol-3-ylium-5-olate], C(17)H(12)Br(2)N(2)O(3), the oxadiazole ring is essentially planar, with a maximum deviation of 0.001 (3) Å. The central oxadiazole ring makes dihedral angles of 73.3 (2) and 29.0 (2)° with the adjacent and remote phenyl rings, respectively. In the crystal, adjacent mol-ecules are connected by C-H⋯O hydrogen bonds, forming a supra-molecular chain along the c axis. There is an intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif.
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