5-Chloro-6-hydroxy-7,8-dimethylchroman-2-one
نویسندگان
چکیده
In the title mol-ecule, C(11)H(11)ClO(3), the fused pyran ring adopts a half-chair conformation. In the crystal, inter-molecular O-H⋯O hydrogen bonds link mol-ecules into chains along [100]. These chains are inter-connected by weak inter-molecular C-H⋯O contacts which generate R(2) (2)(8) ring motifs, forming sheets parallel to (001). Tetra-gonal symmetry generates an equivalent motif along b. Furthermore, the sheets are linked along the c axis by offset π-π stacking inter-actions involving the benzene rings of adjacent mol-ecules [with centroid-centroid distances of 3.839 (2) Å], together with an additional weak C-H⋯O hydrogen bond, resulting in an overall three-dimensional network.
منابع مشابه
6-Hydroxy-7,8-dimethylchroman-2-one
The title compound, C(11)H(12)O(3), is essentially planar, with an r.m.s. deviation of 0.179 Å from the mean plane through the 14 non-H atoms in the mol-ecule. The benzene ring and the pyranone mean plane are inclined at 13.12 (6)° to one another and the pyran-one ring adopts a flattened chair conformation. In the crystal, O-H⋯O hydrogen bonds and C-H⋯O contacts form R(1) (2)(6) rings and link ...
متن کامل(E)-3-(2H-1,3-Benzodioxol-5-yl)-1-(7-hydroxy-5-methoxy-2,2-dimethylchroman-8-yl)prop-2-en-1-one
The reaction of 5,6-(2,2-dimethyl-chromane)-2-hy-droxy-4-meth-oxy-acetophenone and 3,4-methlene-dioxy-benzaldehyde affords the title chalcone derivative, C(22)H(22)O(6). The two benzene rings are connected through a -C(=O)-CH=CH- (propenone) unit, which is in an E conformation; the ring with the hy-droxy substitutent is aligned at 6.2 (1)° with respect to this unit, whereas the ring with the me...
متن کامل6-(2-Chlorobenzyl)-1-(4-chlorophenyl)-7-hydroxy-2,3-dihydro-1H-imidazo[1,2-a]pyrimidin-5-one
The title compound, C(19)H(15)Cl(2)N(3)O(2), was obtained by a one-step cyclo-condensation of 2-amino-1-(4-chloro-phen-yl)imidazoline with diethyl (2-chloro-benz-yl)malonate under basic conditions. In the crystalline state, the mol-ecule exists as the 7-hy-droxy-5-oxo tautomer. The dihedral angles between the fused imidazopyrimidine and aromatic chloro-phenyl and chloro-benzyl rings are 14.2 (1...
متن کامل(E)-3-[3,4-Bis(methoxymethoxy)phenyl]-1-(7-hydroxy-5-methoxy-2,2-dimethylchroman-8-yl)prop-2-en-1-one
The reaction of 5,6-(2,2-dimethyl-chroman-yl)-2-hy-droxy-4-meth-oxy-acetophenone and 3,4-bis-(meth-oxy-meth-yloxy)benzaldehyde affords the intense orange title chalcone derivative, C(25)H(30)O(8). The two benzene rings are connected through a -C(=O)-CH=CH- (propenone) unit, which is in an E conformation; the ring with the hy-droxy substitutent is aligned at 19.5 (2)° with respect to this unit, ...
متن کامل[5-Chloro-2-hydroxy-N′-(2-oxidobenzylidene)benzohydrazidato]dimethyltin(IV)
In the title compound, [Sn(CH(3))(2)(C(14)H(9)ClN(2)O(3))], the Sn(IV) ion is coordinated by one N and two O atoms from the tridentate 5-chloro-2-hy-droxy-N'-(2-oxidobenzyl-idene)benzohydrazidate (L) ligand and two methyl groups in a distorted trigonal-bipyramidal geometry. In the ligand, the hy-droxy group is involved in an intra-molecular O-H⋯N hydrogen bond and the two aromatic rings form a ...
متن کامل