Crystal structure of dimethyl 2-((2Z,5Z)-5-(2-methoxy-2-oxoethylidene)-2-{(E)-[2-methyl-5-(prop-1-en-2-yl)cyclohex-2-enylidene]hydrazinylidene}-4-oxothiazolidin-3-yl)fumarate
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چکیده
The crystal structure and the conformation of the title compound, C22H27N3O7S, were determined from the synthetic pathway and by X-ray analysis. This compound is a new 4-thia-zolidinone derivative prepared and isolated as pure product from thio-semicarbazone carvone. The mol-ecule is built up from an oxo-thia-zolidine ring tetra-substituted by a meth-oxy-oxo-ethyl-idene, a maleate, an oxygen and a cyclo-hexyl-idene-hydrazone. The cyclo-hexyl-idene ring is statistically disordered over two positions, resulting in an inversion of configuration for the substituted carbon.
منابع مشابه
Ethyl 6-(6-methoxy-2-naphthyl)-2-oxo-4-(2-thienyl)cyclohex-3-ene-1-carboxylate
The title compound, C(24)H(22)O(4)S, was prepared by reaction between (2E)-3-(6-meth-oxy-2-naphth-yl)-1-(2-thien-yl)prop-2-en-1-one and ethyl acetoacetate. In the crystal, the cyclo-hexenone ring shows a distorted half-chair conformation. The length of the double bond in the cyclohexenone ring [1.343 (4) Å] is normal.
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The title complex, [Cu(C22H19N2O3S2)2], was obtained from the reaction between (Z)-methyl 2-(5-benzyl-imino-4-benzyl-carbamo-thioyl-3-oxo-thio-lan-2-yl-idene)acetate and Cu(NO3)2. The Cu(II) atom is tetra-coordinated by two N,S-bidentate ligands, forming a highly distorted tetra-hedral environment. The structure displays two intra-molecular N-H⋯O hydrogen bonds.
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The asymmetric unit of the title compound, C(25)H(29)N(3)O, comprises two crystallographically independent mol-ecules. The dihedral angles between the benzene rings in the two mol-ecules are 59.7 (2) and 61.27 (18)°. The cyclo-hexene rings adopt sofa and half-chair conformations. In the crystal, mol-ecules are connected via N-H⋯O and weak C-H⋯O hydrogen bonds, forming chains along the a axis. I...
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The title compound, C(19)H(28)O(5)Si, was obtained in the reaction of 1,3-dihydro-4-[(tert-butyl-dimethyl-sil-yl)-oxy]-6-meth-oxy-7-methyl-3-oxo-5-(prop-2-en-yl)isobenzofuran with meta-chloro-perbenzoic acid. This reaction is one of the stages of the total synthesis of mycophenolic acid, which we attempted to modify. The title compound forms crystals with only weak inter-molecular inter-actions...
متن کاملCrystal structure of methyl (Z)-2-[(Z)-3-methyl-2-({(E)-1-[(R*)-4-methylcyclohex-3-en-1-yl]ethylidene}hydrazinylidene)-4-oxothiazolidin-5-ylidene]acetate
The new title 4-thia-zolidinone derivative, C16H21N3O3S, was obtained from the cyclization reaction of 4-methyl-3-thio-semicarbazone and dimethyl acetyl-enedi-carboxyl-ate (DMAD). The cyclo-hexyl-idene ring has an envelope conformation with the stereogenic centre C atom as the flap. Its mean plane makes a dihedral angle of 56.23 (9)° with the thia-zolidine ring mean plane. In the crystal, mol-e...
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