Ethyl 3′-(2,4-dichlorophenyl)-5′-hydroxy-5′-methyl-4′,5′-dihydrospiro[fluorene-9,2′(3′H)-furan]-4′-carboxylate
نویسندگان
چکیده
The furan ring and the five-membered fluorene unit in the title compound, C(26)H(22)Cl(2)O(4), adopt envelope conformations. Inter-molecular C-H⋯O inter-actions between symmetry-related mol-ecules involving two C-H groups and an O atom as a bifurcated acceptor generate centrosymmetric hydrogen-bonded dimers with cyclic R(2) (2)(16) and R(2) (2)(8) ring motifs. A short C-H⋯Cl intramolecular contact occurs in the molecule.
منابع مشابه
Ethyl 6-(4-ethoxyphenyl)-4-(furan-2-yl)-2-oxocyclohex-3-ene-1-carboxylate
The title compound, C(21)H(22)O(5), was prepared by NaOH-catalysed cyclo-condensation of 3-(4-ethoxy-phen-yl)-1-(furan-2-yl)prop-2-en-1-one with ethyl acetoacetate. In the crystal, C-H⋯O and C-H⋯π inter-actions link the mol-ecules. In the title mol-ecule, the furan and cyclo-hexene rings are almost parallel [6.77 (11)°] and the cyclo-hexene ring is approximately perpendicular to the benzene rin...
متن کاملMethyl 2-ethyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
In the title compound, C(12)H(13)NO(5)S, the thia-zine ring adopts a half chair conformation and an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, the mol-ecules are linked by C-H⋯O inter-actions, leading to zigzag chains along the b axis.
متن کاملEthyl 2-[4-(benzyloxy)anilino]-4-oxo-4,5-dihydrofuran-3-carboxylate
In the title compound, C(20)H(19)NO(5), the dihydro-furan ring is almost planar [maximum deviation of 0.021 (2)°] and makes dihedral angles of 28.1 (7) and 54.5 (5)° with the benzyl and phenyl-amino rings, respectively. The mol-ecular packing is stabilized by intra-molecular N-H⋯O hydrogen bonds and inter-molecular C-H⋯O inter-actions.
متن کامل3-(2,4-Dichlorophenyl)-2-oxo-1-oxaspiro[4.5]dec-3-en-4-yl 4-chlorobenzoate
In the title spiro-diclofen derivative, C(22)H(17)Cl(3)O(4), the cyclo-hexane ring adopts a chair conformation [four C atoms are planar with a mean deviation of 0.018 Å and the two C atoms at the flap positions deviate by 0.613 (4) and -0.668 (5) Å from the plane]. The dihedral angles between the furan ring and the two benzene rings are 55.78 (3) and 49.92 (3)°. Weak inter-molecular C-H⋯Cl inte...
متن کاملEthyl 5-[(1H-benzoimidazol-2-yl)aminocarbonyl]-4-hydroxy-2-methyl-6-oxo-1-propyl-1,6-dihydropyridine-3-carboxylate–ethanol–methanol (4/2/1)
The asymmetric unit of the title compound, 4C(20)H(22)N(4)O(5)·2C(2)H(6)O·CH(4)O, contains two pyridine-3-carboxyl-ate mol-ecules, one ethanol mol-ecule and one methanol mol-ecule disordered about in a centre of symmetry. The pyridinone ring, the carbamide group and the bicyclic fragment in both independent mol-ecules are planar within 0.03 Å due to the formation of intra-molecular O-H⋯O and N-...
متن کامل