Crystal structures of 1-(2-hydroxyphenyl)-3-phenyl-1,3-propanedione and 1-(1,3-benzodioxol-5-yl)-3-(2,4-dimethoxyphenyl)-1,3-propanedione
β Scribed by Seik Weng Ng; Abdul Hamid Othman; Sri Nurestri Abdul Malek
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 344 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1572-8854
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π SIMILAR VOLUMES
1-(2-Apdroxyphenyll-3-phenyl-1,3-propanedione (la) reacts with formaldehyde in the presence of different 1-arylpiperasines (2) to form (1:l) inclusion compounds (3) which on column chromatographic separation yield 4,5,11,12-dibenzo-7-hydroxymethyl-l,3-dioxa-6,lO-dioxo-7,S-diphe~lcyclododecane (4) an
In the title compound, C~16~H~12~O~3~, the dihedral angle between the benzene rings is 12.0β (1)Β°. In the crystal structure, the molecules are linked through ΟβΟ interactions and CβH...Ο (arene) hydrogen-bonding interactions.
In the title biologically active compound, C 16 H 12 O 3 , the central C C double bond is trans configured. The molecule consists of two essentially planar parts which are twisted by 26.89 (5) with respect to each other.
Co(salpr) promotes the conversion of 1-(2-hydroxyphenyl)-3-phenyl-1,3\_propanediones to retro-Claisen reaction products and flavones in methanol under oxygen. Base catalysis by Co(salpr)(OH) produced in situ is responsible for the reaction. Cobalt Schiff base complexes [Co(SB)] are very interesting