29574-84-3Relevant academic research and scientific papers
Reversible addition and elimination of alcohols by vicinal tetracarbonyl compound
Maeda, Shinya,Sudo, Atsushi,Endo, Takeshi
, p. 1061 - 1065 (2016)
In this Letter, we report reversible addition and elimination of alcohols by acyclic vicinal tetracarbonyl compounds. First, the reversible fixation and release behavior of alcohols by an acyclic vicinal tetracarbonyl compound, 1,4-diphenyl-1,2,3,4-butanetetraone (DPBT) was investigated. On the basis of the results, the addition of alcohol to DPBT was carried out to provide the alcohol adduct of DPBT, which has a hemiacetal structure. Furthermore, we discovered the reaction of DPBT with 2 equi amount of methanol.
The Crystal Structures of 1,3-Diphenylpropane-1,2,3-trione, 1,4-Diphenylbutane-1,2,3,4-tetraone, 2,4-Dihydroxy-2,5-diphenylfuran-3(2H)-one and 3,3-Dihydroxy-1,4-diphenylbutane-1,2,4-trione
Beddoes, Ralph L.,Cannon, Jack R.,Heller, Menachem,Mills, Owen S.,Patrick, Vincent A.,et al.
, p. 543 - 556 (2007/10/02)
As a contribution towards a study of the relative disposition of adjacent carbonyl groups in polycarbonyl compounds, the crystal structures of 1,3-diphenylpropane-1,2,3-trione (1), 1,4-diphenylbutane-1,2,3,4-tetraone(3), 2,4-dihydroxy-2,5-diphenylfuran-3(2H)-one (benzoylformoin) (7) and 3,3-dihydroxy-1,4-diphenylbutane-1,2,4-trione (8) have been determined by X-ray diffraction from diffractometer data at 295 K and refined by least-squares techniques to residuals of 0.036 (942 'observed' reflections), 0.029 (979), 0.067 (941) and 0.045 (1661), respectively.Crystals of 1,3-diphenylpropane-1,2,3-trione are triclinic, P, a 9.756(4), b 8.813(3), c 8.303(3) Angstroem, α 68.56(2), β 67.53(3), γ 89.11(3) deg, Z 2.Crystals of 1,4-diphenylbutane-1,2,3,4-tetraone are monoclinic P21/c, a 10.641(2), b 8.381(2), c 14.710(4) Angstroem, β 91.70(2) deg, Z 4. 2,4-dihydroxy-2,5-diphenylfuran-3(2H)-one also forms monoclinic crystals, P21/c, a 5.741(4), b 9.276(7), c 24.31(2) Angstroem, β 106.26(5) deg, Z 4.Crystals of 3,3-dihydroxy-1,4-diphenylbutane-1,2,4-trione are triclinic, P, a 13.08(1), b 12.43(1), c 8.895(8) Angstroem, α 82.54(8), β 81.87(7), γ 78.61(7) deg, Z 4.
