Faculty Publications
Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736
Publications by NITK Faculty
Browse
11 results
Search Results
Item 2-(4-Chlorophenyl)-2-oxoethyl 4-hydroxybenzoate(2011) Fun, H.-K.; Shahani, T.; Garudachari, B.; Isloor, A.M.; Shivananda, K.N.The title compound, C 15H 11ClO 4, consists of a chloro-benzene ring and a phenol ring which are linked together by a 1,4-dioxo-2-oxabutane-1,4-diyl group. The dihedral angle between the chloro-benzene and phenol rings is 65.70 (11)°. In the crystal, intermolecular O-H?O hydrogen bonds link the molecules into chains along [010].Item 2-(4-Bromophenyl)-2-oxoethyl 4-methylbenzoate(2011) Fun, H.-K.; Shahani, T.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.The title compound, C16H13BrO3, consists of a toluene ring and a bromo-benzene ring which are linked together by a 2-oxopropyl acetate group. The dihedral angle formed between the toluene and bromo-benzene rings is 80.70 (7)°. In the crystal, intermolecular C-H?O hydrogen bonds link the molecules into a three-dimensional network.Item 2-(2,4-Dichlorophenyl)-2-oxoethyl 4-methoxybenzoate(2011) Fun, H.-K.; Chia, T.S.; Shenvi, S.S.; Isloor, A.M.; Garudachari, B.In the title compound, C16H12Cl2O 4, the dihedral angle between the benzene rings is 70.11 (6)°. In the crystal, molecules are linked by C-H?O hydrogen bonds into a three-dimensional network. A C-H?? inter-action is also observed.Item 2-(4-Fluorophenyl)-2-oxoethyl 4-methoxybenzoate(2011) Fun, H.-K.; Loh, W.-S.; Garudachari, B.; Isloor, A.M.; Satyanarayan, M.N.In the title compound, C16H13FO4, the dihedral angle between the benzene rings is 84.28 (8)°. In the crystal, C-H?F and C-H?O hydrogen bonds link the molecules to form a three-dimensional network. The crystal structure is consolidated by C-H?? interactions and short F?F contacts [2.7748 (14) Å] also occur..Item 2-(4-Fluorophenyl)-2-oxoethyl 2-methoxy-benzoate(2012) Isloor, A.M.; Garudachari, B.; Satyanarayan, M.N.; Gerber, T.; Hosten, E.; Betz, R.In the title compound, C 16H 13FO 4, the aromatic rings enclose an angle of 73.68 (6)°. In the crystal, C - H?O and C - H?F contacts connect the mol-ecules into a three-dimensional network. The shortest inter-centroid distance between two aromatic ?-systems is 3.6679 (7) Å and is apparent between the fluorinated phenyl groups.Item Ethyl 1-(2,4-dichlorobenzyl)-4-oxo-7-trifluoromethyl-1,4-dihydroquinoline- 3-carboxyl-ate(2012) Fun, H.-K.; Ooi, C.W.; Garudachari, B.; Isloor, A.M.; Hegde, G.In the title compound, C 20H 14Cl 2F 3NO 3, the trifluromethyl group is disordered over two sets of sites in a 0.784 (10):0.216 (10) ratio. The quinoline ring system is essentially planar with a maximum deviation of 0.058 (2) Å for the N atom and forms dihedral angles of 89.23 (11) and 8.13 (17)°, respectively with the mean planes of the benzene ring and the carboxylate group. In the crystal, pairs of weak C - H?O and C - H?F hydrogen bonds link molecules into centrosymmetric dimers. The crystal structure is further stabilized by weak ?-? [centroid-centroid distance = 3.624 (2) Å] interactions.Item Ethyl (Z)-3-(4-methylanilino)-2-[(4-methylphenyl)carbamoyl]prop-2-enoate(2012) Islor, A.M.; Garudachari, B.; Gerber, T.; Hosten, E.; Betz, R.The title compound, C20H22N2O3, is a secondary amine featuring an amide and an ester functionality in connection with a Michael system. The conformation about the C=C bond is E. Intramolecular N-H?O hydrogen bonds occur. In the crystal, C-H?O contacts connect the molecules into chains along the b-axis direction.Item 3-(4-Chlorophenyl)-5-phenyl-4,5-dihydro-1,3-oxazole(2012) Islor, A.M.; Yaradoni, R.; Garudachari, B.; Gerber, T.; Hosten, E.; Betz, R.In the title compound, C15H12ClNO, the isoxazoline ring adopts an envelope conformation with the C atom bearing an unsubstituted phenyl ring as the flap atom. The chlorinated phenyl group is nearly in-plane with the four coplanar atoms of the heterocycle and the corresponding mean planes enclosing an angle of 1.16(7)°. The unsubstituted phenyl group attached to the envelope flap atom approaches a nearly perpendicular orientation relative to the isoxazoline ring with a dihedral angle of 74.93(7)°. In the crystal, weak C-H?O, C-H?N and C-H?? interactions connect the molecules into layers perpendicular to the a axis.Item Ethyl 4-({1-[2-(4-bromophenyl)-2-oxoethyl]-1H-1,2,3-triazol-4-yl}methoxy)- 8-(trifluoromethyl)quinoline-3-carboxylate(2012) Islor, A.M.; Garudachari, B.; Shivananda, K.N.; Gerber, T.; Hosten, E.; Betz, R.The title compound, C24H18BrF3N4O4, is a 1,2,3-triazole derivative featuring, among others, a quinoline-derived substituent. In the crystal, C-H?O, C-H?N and C-H?F contacts connect the molecules into a three-dimensional network. The shortest centroid-centroid distance between two aromatic systems is 3.896 (2) Å and is found between the two different six-membered rings of the quinoline scaffold in neighbouring molecules.Item Ethyl 4-oxo-8-trifluoromethyl-1,4-dihydroquinoline-3-carboxylate(2012) Garudachari, B.; Islor, A.M.; Satyanarayan, M.N.; Gerber, T.; Hosten, E.; Betz, R.The asymmetric unit of the title compound, C13H10F3NO3, contains two independent molecules with similar conformations. In the crystal, N-H?O hydrogen bonds link alternating independent molecules into chains in [-110]. In the chain, the quinoline planes of the independent molecules are almost perpendicular to each other, forming a dihedral angle of 89.8 (1)°. ?-? interactions between the aromatic rings of quinoline bicycles related by inversion centres [for two independent centrosymmetric dimers, the shortest centroid-centroid distances are 3.495 (1) and 3.603 (1) Å] link the hydrogen-bonded chains into layers parallel to (110). Weak C-H?F and C-H?O interactions further consolidate the crystal packing.