[PDF] Top 20 Crystal structure of 4 azidomethyl 6 isopropyl 2H chromen 2 one
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Crystal structure of 4 azidomethyl 6 isopropyl 2H chromen 2 one
... biocompatibility, 2H-chromen-2-ones have been found to exhibit variety of biological activities (Naik et ...the crystal structure is presented ... See full document
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Crystal structure of (E) 4 hydroxy 6 methyl 3 {1 [2 (4 nitrophenyl)hydrazinylidene]ethyl} 2H pyran 2 one
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, ... See full document
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(5S,6R) 3,4,5,6 Tetrahydro 5 methyl 6 phenyl 4 propyl 2H 1,3,4 oxadiazin 2 one
... 3,4,5,6-Tetrahydro-2H-1,3,4-oxadiazin-2-ones (Trepanier et al., 1968; Hitchcock et al., 2001) have been known for more than thirty years but have only recently been examined in terms of their synthesis ... See full document
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Crystal structure of 3 [2 (4 methylphenyl)ethynyl] 2H chromen 2 one
... The title compound, Fig. 1, is an asymmetric alkyne. The coumarin residue is approximately planar with the r.m.s. deviation of the 11 non-hydrogen atoms being 0.048 Å; the maximum deviations from their least-squares ... See full document
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Crystal structure of 4 methyl 2 oxo 2H chromen 7 yl ferrocenecarboxylate
... ferrocenyl moiety and a 4-methylcoumarin group linked through an ester unit to one of the cyclopentadienyl (Cp) rings. The two Cp rings are virually parallel, with an angle between the two least-squares ... See full document
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Crystal structure of (tert butylcarbamoyl)(4 chloro 2 oxo 2H chromen 3 yl)methyl acetate
... reacting 4-chloro-3-formylcoumarin, acetic acid and tert- butyl isocyanide, the acetamido side chain is convoluted with ring-to-side chain C—C—C—C, C—C—C—N and C—C— N—C torsion angles of ...the crystal, N—H ... See full document
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Crystal structure of 4 methyl 7 propoxy 2H chromen 2 one
... molecules, A and B, that are interconnected through an offset – interaction [inter-centroid separation = 3.6087 (4) A ˚ ]. The fused benzene and pyran-2-one rings in each molecule are essentially ... See full document
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Crystal structure of (4E) 4 (8 methoxy 2H chromen 2 ylidene) 3 methyl 1 phenyl 1H pyrazol 5(4H) one
... C2 0.0550 (11) 0.0476 (9) 0.0477 (10) −0.0008 (7) 0.0044 (8) −0.0021 (8) C3 0.0697 (13) 0.0533 (10) 0.0496 (11) −0.0105 (9) 0.0030 (9) −0.0022 (9) C4 0.0898 (16) 0.0451 (9) 0.0432 (11) −0.0025 (9) 0.0052 (10) −0.0037 (8) ... See full document
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4 Bromomethyl 6 tert butyl 2H chromen 2 one
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, ... See full document
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Crystal structure of 7 hydroxy 8 [(4 methylpiperazin 1 yl)methyl] 2H chromen 2 one
... the crystal, a C—H O hydrogen bond generates a C(4) chain motif running along the c ...chain structure is stabilized by a C—H ...sheet structure parallel to the bc ... See full document
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Crystal structure of 4 (4b,8a dihydro 9H pyrido[3,4 b]indol 1 yl) 7 methyl 2H chromen 2 one
... 7-methyl-4-phenyl-2H-chromen- 2-one nucleus (refcodes: BUFQUQ, FINNEX, GUFTUY, IFUMED, LENYIO, ...7-methyl-4-(pyridin-2-yl)-2H- ... See full document
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Crystal structure of (7 fluoro 2 oxo 2H chromen 4 yl)methyl morpholine 4 carbodithioate
... Geometry . All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of ... See full document
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Crystal structure of (7 methyl 2 oxo 2H chromen 4 yl)methyl piperidine 1 carbodithioate
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, ... See full document
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(6 Methoxy 2 oxo 2H chromen 4 yl)methyl morpholine 4 carbodithioate
... The 2H-chromene ring system (O3/C8–C16) is essentially planar, with a maximum deviation of ...the 2H-chromene (O3/C8–C16) ring and the morpholine (N7/O5/C20–C23) ring is ...the crystal ... See full document
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Crystal structure of (7 chloro 2 oxo 2H chromen 4 yl)methyl N,N dimethylcarbamodithioate
... Geometry . All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of ... See full document
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Crystal structure of 4 azidomethyl 6 tert butyl 2H chromen 2 one
... of the tert-butyl group lies almost in the plane of the chromene ring system [deviation = 0.097 (2) A ˚ ], one lies above and one lies below [deviations = 1.460 (3) and 1.006 (3) A ˚ , respec- ... See full document
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(6 Methoxy 2 oxo 2H chromen 4 yl)methyl piperidine 1 carbodithioate
... The 2H- chromene ring system is almost planar, with a maximum deviation of ...the 2H-chromene (O3/C7–C15) ring and the piperidine ring (N6/C19–C23) is ...the crystal structure, C19—H19B···O5 ... See full document
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Crystal structure of (6 bromo 2 oxo 2H chromen 4 yl)methyl morpholine 4 carbodithioate
... For biological applications of coumarins and dithio- carbamates, see: D’hooghe & De Kimpe (2006); Hesse & Kirsch (2002); Jung et al. (2001, 2004); Lee et al. (1998); Melagraki et al. (2009); Scho¨nenberger & ... See full document
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Crystal structure of 7 [(2E) 2 benzylidene 3 oxobutoxy] 4 methyl 2H chromen 2 one
... Geometry . All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of ... See full document
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Crystal structure of (E) 4 hydroxy 3 {1 [(4 hydroxyphenyl)imino]ethyl} 6 methyl 2H pyran 2 one
... The N1—C5 distance of 1.324 (2) Å agree with similar bond in related compounds (Girija & Begum, 2004; Girija et al. 2004), slightly longer than a typical C=N bond (1.283 (4) Å) (Bai & Jing, 2007); ... See full document
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