Five-membered 2,3-dioxoheterocycles: LXXXIII. Synthesis and thermolysis of 1-aryl-4,5-diaroyl-1H-pyrrole-2,3-diones
摘要:
The reaction of (Z)-2-amino-1,4-diarylbut-2-en-1,4-diones with oxalyl chloride led to the formation of 1-aryl-4,5-diaroyl-1H-pyrrole-2,3-diones that at the thermal decarbonylation gave aroyl(N-arylimidoyl)ketenes which underwent stabilization by molecular cyclization into 2,3-diaroylquinolin-4(1H)-ones.
[hydroxy(tosyloxy)iodo]benzene followed by treatment of the resulting α-tosyloxyacetophenones 2 thus formed with anilines 3 in the presence of sodium carbonate in ethanol provides a novel one-pot synthesis of 1,4-diaryl-2-(arylamino)but-2-ene-1,4-diones 4.
Methyl and methoxy substituted nitroarenes were reacted with acethophenone in the presence of sodium ethoxide in ethanol giving arylamino-conjugated diketo derivatives. A case of ipso-substitution of a methoxy group is discussed. The title compound C23H19NO2 (M(r) = 341.4) crystallizes in the monoclinic system, space group P2(1)/n with a = 21.579(4), b = 8.526(2), c = 9.983(2) angstrom; beta = 92.3(1)-degrees; V = 1835.2(7) angstrom-3, Z = 4, D(c) = 1.24 g cm-3, mu(Cu-K-alpha) = 5.9 cm-1, lambda = 1.5418 angstrom, F(OOO) = 720. The molecule adopts the E configuration with the C = O carbonyl groups trans with respect to the ethylenic double bond.
Gomaa, Mohsen Abdel-Motaal, Journal of Chemical Research, Miniprint, 1997, # 12, p. 2679 - 2687
作者:Gomaa, Mohsen Abdel-Motaal
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Gomaa, Mohsen Abdel-Motaal, Journal of Chemical Research, 2004, # 1, p. 81 - 83
作者:Gomaa, Mohsen Abdel-Motaal
DOI:——
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Synthesis of 2-amino-2-butene-1,4-diones via three-component reactions of dihydroxyketones, amines and sulfoxonium ylides