The Cyclization of Ethyl 1,4-Dihydroxy-2-naphthoate to 1,4-Dihydroxy-2,3-benzofluorenone
β Scribed by Koelsch, C. F.
- Book ID
- 127175799
- Publisher
- American Chemical Society
- Year
- 1945
- Tongue
- English
- Weight
- 226 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Geometric parameters of the title compound, C 10 H 14 NO 2 + Γ-Cl Γ ΓH 2 O, are in the usual ranges. The tetrahydropyridine ring adopts a half-chair conformation with the methyl group in an equatorial and the hydroxy group in an axial position. The crystal packing is stabilized by O-HΓ Γ ΓO, O-HΓ Γ
The title compound (C 10 H 10 O 2 Br 2 ) crystallizes in the orthorhombic space group P2 1 2 1 2 1 with a = 5.0319(2)Γ , b = 13.5282(5)Γ , c = 15.6289(6)Γ , V = 1063.90(1)Γ 3 , Z = 4, D x = 2.01 g/cm 3 at T = 293(2)K. The structure was solved by direct methods and refined by full-matrix least-squares p
Recently we reported a new method for the substitution of an hydroxy-or methoxy-group on the bridgehead carbon atom in the bicyclo[2.2.2]octane series by halogens (I), using various halogenating agents [e.g. POCl3, SOC12, PBr3 and also alkali chlorides, bromides or iodide8 (2)] in the presence of po