[PDF] Top 20 Crystal structure of 6 bromo 7 fluoro 4 oxo 4H chromene 3 carbaldehyde
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Crystal structure of 6 bromo 7 fluoro 4 oxo 4H chromene 3 carbaldehyde
... Br1 0.0215 (4) 0.0219 (3) 0.0289 (4) 0.0043 (3) 0.0054 (3) −0.0050 (3) F1 0.0229 (19) 0.0293 (18) 0.0217 (17) −0.0055 (16) −0.0022 (18) −0.0089 (15) O1 0.0088 (19) 0.024 (2) ... See full document
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8 Chloro 4 oxo 4H chromene 3 carbaldehyde
... the crystal structures of chlorinated 3- formylchromone derivatives 6,8-dichloro-4-oxochromene-3-carbaldehyde (Ishikawa & Motohashi, 2013, ...and ... See full document
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Crystal structure of 4 oxo 4H chromene 3 carboxylic acid
... O1 0.0147 (7) 0.0167 (7) 0.0185 (7) −0.0005 (6) 0.0009 (6) 0.0031 (6) O2 0.0196 (7) 0.0168 (7) 0.0205 (8) 0.0020 (6) −0.0015 (6) 0.0056 (6) O3 ... See full document
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8 Fluoro 4 oxo 4H chromene 3 carbaldehyde
... F1 0.0193 (4) 0.0333 (5) 0.0246 (5) 0.0075 (4) −0.0019 (3) 0.0064 (4) O1 0.0142 (4) 0.0207 (5) 0.0178 (5) 0.0016 (4) 0.0028 (4) 0.0012 (4) O2 0.0171 (5) 0.0282 (5) ... See full document
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6,8 Dibromo 4 oxo 4H chromene 3 carbaldehyde
... the crystal, because 3- formylchromones without any halogen atom at the 8-position in the literature do not show the urease inhibitory activity (Kawase et ... See full document
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6 Chloro 8 nitro 4 oxo 4H chromene 3 carbaldehyde
... the crystal structures of a dichlorinated 3-formylchromone derivative 6,8-dichloro-4-oxochromene-3-carbaldehyde (Ishikawa & Motohashi, 2013) and a monochlorinated ... See full document
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6 Chloro 4 oxo 4H chromene 3 carbaldehyde
... the crystal structures of dihalogenated 3-formylchromone derivatives 6,8-dichloro-4-oxochromene-3-carbaldehyde (Ishikawa & Motohashi, 2013; ...the crystal structure of ... See full document
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6 Fluoro 4 oxo 4H chromene 3 carbaldehyde
... F1 0.0315 (5) 0.0312 (5) 0.0153 (5) −0.0033 (4) 0.0012 (4) 0.0069 (4) O1 0.0222 (5) 0.0154 (5) 0.0157 (5) −0.0035 (4) 0.0014 (4) 0.0000 (4) O2 0.0223 (5) 0.0183 (5) 0.0204 (5) ... See full document
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6 Methyl 4 oxo 4H chromene 3 carbaldehyde
... A solution of 5-methyl-2-hydroxyacetophenone (10 mmol) in DMF was then slowly added under stirring at 50°C. The stirring was continued for additional 2 h at 55–60°C. After cooling, the mixture was kept over night at room ... See full document
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Crystal structures of ethyl 6 (4 methylphenyl) 4 oxo 4H chromene 2 carboxylate and ethyl 6 (4 fluorophenyl) 4 oxo 4H chromene 2 carboxylate
... Benzopyran derivatives represent a large class of natural and synthetic heterocycles that are often linked to a broad array of biological activities, (Gaspar et al., 2014, 2015). Within this vast class of compounds, the ... See full document
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Crystal structure of 4 (6 bromo 4 oxo 4H chromen 3 yl) 2 methylamino 3 nitropyrano[3,2 c]chromen 5(4H) one chloroform monosolvate
... 4-Hydroxycoumarin (0.81 g, 5 mmol), 6-bromo-4-oxo-4H-chromene-3-carbaldehyde (0.78 g, 5 mmol) and NMSM (0.74 g, 5 mmol) were mixed in ethanol at room ... See full document
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Polymorphism in the structure of N (5 methylthiazol 2 yl) 4 oxo 4H chromene 3 carboxamide
... complementary red spots in the lateral faces of the surface as highlighted in Fig. 5, left. The small red-spot areas facing the chromone plane are due to C C contacts (that assume 7.1% of the contact area) and they ... See full document
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Crystal structure of 4 bromophenyl 2 oxo 2H chromene 3 carboxylate
... in 4-(octyloxy)phenyl 2-oxo-2H-chromene-3-carboxylate (IV) (Palakshamurthy, Devarajegowda et ...in 4-[4-(heptyloxy)benzoyloxy] phenyl 2-oxo-7-trifluoro- ... See full document
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Crystal structure of ethyl (4R) 2 amino 7 hydroxy 4 phenyl 4H chromene 3 carboxylate
... the crystal, molecules are linked into N—H O hydrogen- bonded inversion dimers which are then connected into chains along [001], forming a two-dimensional network parallel to (100) via O—H O hydrogen ... See full document
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6,8 Diiodo 4 oxo 4H chromene 3 carbaldehyde
... I···O interactions come within the range of halogen bonding (Auffinger et al. , 2004). It is noted that the geometry of the I···O interactions for the title compound is different from that for ... See full document
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The crystal structures of four N (4 halophenyl) 4 oxo 4H chromene 3 carboxamides
... The conformational features herein established are prob- ably most relevant for the extrapolation of the inhibitory MAO-B activities of chromone carboxamides as they are related to the intermolecular forces responsible ... See full document
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Crystal structure of 7 iodo 4 oxo 4H chromene 3 carbaldehyde
... the crystal, molecules are linked through stacking interactions [centroid–centroid distance between the benzene rings = ...at 7-position and the formyl O atoms [I1 O3 = ... See full document
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6 Bromo 4 oxo 4H chromene 3 carbaldehyde
... C3 0.0103 (9) 0.0085 (9) 0.0118 (10) −0.0032 (7) −0.0012 (8) −0.0037 (7) C4 0.0095 (9) 0.0104 (9) 0.0126 (10) −0.0032 (7) −0.0001 (8) −0.0047 (8) C5 0.0122 (9) 0.0110 (9) 0.0116 (10) −0.0040 ... See full document
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6 Iodo 4 oxo 4H chromene 3 carbaldehyde
... at 6-position, as shown in Fig.·3D. The space group and crystal packing mode of the title compound are the same with those of 6-chloro-4- oxo-4 H ... See full document
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Crystal structure of 8 bromo 4 oxo 4H chromene 3 carbaldehyde
... Br1 0.0141 (2) 0.0192 (3) 0.0204 (2) 0.0019 (2) 0.00822 (16) 0.0016 (2) O1 0.0123 (13) 0.0238 (16) 0.0188 (14) 0.0028 (13) 0.0093 (12) 0.0037 (14) O2 0.0140 (15) 0.034 (2) 0.0266 (17) 0.0055 (15) 0.0090 (13) ... See full document
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