5520-89-8Relevant academic research and scientific papers
Chemistry of 1,5-diketones: II. Specificity of transformations of polycyclic 1,5-diketones in acid media
Pchelintseva,Kolevatova,Markova,Fedotova,Reshetov
experimental part, p. 1267 - 1270 (2009/07/17)
2-(1,3-Diaryl-3-oxopropyl)cyclohexan-1-ones underwent carbo-and heterocyclization in a mixture of acetic acid with acetic anhydride in the presence of perchloric acid. The transformation of 2-(1,3-diaryl-3-oxopropyl) cyclohexan-1-ones into 2,4-diaryl-5,6,7,8-tetrahydrochromenylium salts was shown to involve intermediate 2,4-diarylbicyclo[3.3.1]non-2-en-9-ones. The structure of 2,4-diaryl-substituted bicyclo[3.3.1]non-2-en-9-ones and products of their reactions with halogens and hydroxylamine hydrochloride was confirmed by 1H and 13C NMR spectroscopy.
CONVERSION OF trans,trans-1-METHOXY-3,5-DIARYL-2-OXABICYKLODEC-3-ENES INTO HEMIDITHIOACETALS AND 4H-THIOPYRANS. STRUCTURE OF trans,trans-1-MERCAPTO-3-PHENYL-5-(4-METHOXYPHENYL)-2-THIABICYCLODEC-3-ENE
Klimenko, S. K.,Tyrina, T. I.,Sorokin, N. N.,Vlasova, L. V.,Sherbakov, A. A,et al.
, p. 23 - 28 (2007/10/02)
The conversion of trans,trans-1-methoxy-3,5-diaryl-2-oxabicyclodec-3-enes into trans,trans-1-mercapto-3,5-diaryl-thiabicyclodec-3-enes or 2,4-diaryl-5,6-tetramethylene-4H-thiopyrans, which takes place when hydrogen sulfide is reacted with the acetals in acetic acid with the use of gaseous hydrogen chloride as a catalyst, has been described.A mechanism for reaction has been proposed.The structure and conformations of the molecules have been determined by x-ray diffraction analysis and (13)C NMR.
