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Investigation of supramolecular synthons and structural characterisation of aminopyridine-carboxylic acid derivatives
... the pyridine plane. Similar bond distances and angles have been observed in 2-aminopyridinium succinate-succinic acid ...the carboxylic acid to the N atom of ... See full document
35
4 [5 (4 Pyridyl) 1,3,4 oxadiazol 2 yl]pyridine N oxide–isophthalic acid (1/1)
... 4,4-bi- pyridine (Lu et ...compound, 2-(4-pyridyl)-5-(4-pyridyl N-oxide)-1,3,4-oxadiazole, ...isophthalic acid is a good hydrogen-bonding donor and its two carboxylic ... See full document
53
1 Allyl 4 hydroxy 2 oxo 1,2,5,6,7,8 hexahydroquinoline 3 carboxylic acid
... the pyridine ring, the carboxy, hydroxy and carbonyl groups, and atom C10 are almost coplanar ...(Table 2) leads to a significant change of bond lengths in the hydroxy, carboxy and carbonyl groups; the ... See full document
53
Tri and tetra substituted cyclen based lanthanide(III) ion complexes as ribonuclease mimics: A study into the effect of log K<inf>a</inf>, hydration and hydrophobicity on phosphodiester hydrolysis of the RNA model 2 hydroxypropyl 4 nitrophenyl phosphate (HPNP)
... contain carboxylic acid pendant arms which at low pH are negatively charged and thus form favourable interactions with the positively charged lanthanide ...two 3′pyridine systems presented ... See full document
7
Benzoylmethyl pyridine 4 carboxylate
... of 2-bromo-1-phenylethanone (995 mg, 5 mmol) and pyridine-4- carboxylic acid (615 mg, 5 mmol) in freshly distilled tetrahydrofuran (20 ml) at room temperature under argon and ... See full document
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2 Aminobenzoic acid–4 [2 (pyridin 4 yl)ethyl]pyridine (2/1)
... a 2-aminobenzoic acid mol- ecule in a general position. The acid has a small twist between the carboxylic acid residue and the ring [dihedral angle = ...between pyridine and ... See full document
199
Crystal structure of (3S*,4R*) 4 fluoro 3 (4 methoxyphenyl) 1 oxo 2 phenyl 1,2,3,4 tetrahydroisoquinoline 4 carboxylic acid
... To prevent epimerization during subsequent synthesis steps, e.g. an amide formation, the isosteric substitution of the acidic proton H-4 by a fluorine atom was investigated (Fig. 2). First, the ... See full document
122
4′ Hydroxybiphenyl 4 carboxylic acid
... In the initial refinement with disorder not taken into account one of phenyl rings showed significantly elongated thermal ellipsoids indicating disorder, the dihedral angle between two phenyl rings is 5.66 (2) ... See full document
143
4 [3 Benzoyl 4 (4 chlorophenyl) 1 methylpyrrolidin 2 yl] 1 (4 methoxyphenyl) 3 phenylazetidin 2 one
... A solution of cis-4-formyl-2-azetidinone (1 mmol), sarcosine (1 mmol) and chlorochalcone (1 mmol) was refluxed in toluene (15 ml) using a Dean–Stark apparatus. The completion of the ... See full document
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Pyridine 2,6 dicarboxylic acid–pyridine 4 carboxamide–water (1/1/1)
... (1.67 g, 10 mmol) and pyridine-4-carboxamide (1.52 g, 10 mmol) in tetrahydrofuran (30 ml) was refluxed for 10 h. After filtration and removal of the solvent, a white powder was obtained. Colourless crystals ... See full document
16
1 (Diphenylphosphino) 4 (diphenylphosphinoyl)butane
... Tertiary phosphine oxides have proven utility as coordinating ligands in complex chemistry as well as being useful as aids for crystallization (Etter & Baures, 1988) through simple linear hydrogen-bonding ... See full document
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3 (Morpholinium 1 yl)propanesulfonate
... [2-(N-morpholino)ethanesulfonic acid], MOPS [3-(N-morpholino)propanesulfonic acid] and HEPES {[4-(2-hydroxyethyl)-1-piperazine]ethanesulfonic acid}, has allowed ... See full document
16
1 Cyclopropyl 6 fluoro 7 (4 formylpiperazin 1 yl) 4 oxo 1,4 dihydroquinoline 3 carboxylic acid Corrigendum
... F1 0.0499 (10) 0.0444 (9) 0.0495 (9) −0.0030 (7) 0.0129 (7) 0.0197 (7) O1 0.110 (2) 0.0391 (12) 0.0880 (18) 0.0120 (13) 0.0026 (15) −0.0020 (11) O2 0.0506 (12) 0.0433 (10) 0.0369 (10) 0.0042 (9) −0.0016 (9) 0.0053 ... See full document
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1 Ethyl 5 methyl 3 methylsulfanyl 1H pyrazole 4 carboxylic acid
... S1 0.0827 (7) 0.0813 (7) 0.0406 (5) −0.0260 (5) 0.0116 (4) −0.0163 (4) O1 0.0772 (17) 0.0727 (17) 0.0493 (13) −0.0098 (13) 0.0104 (12) −0.0198 (12) O2 0.090 (2) 0.0600 (16) 0.0522 (14) −0.0139 (14) ... See full document
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Crystal structures of isoquinoline–3 chloro 2 nitrobenzoic acid (1/1) and isoquinolinium 4 chloro 2 nitrobenzoate
... 4-chloro-2-nitrobenzoic acid, the two components are linked by a short hydrogen bond between a base N atom and a carboxy O ...an acid–base interaction involving H-atom transfer occurs and the ... See full document
107
Positive allosteric modulation of the muscarinic M1 receptor improves efficacy of antipsychotics in mouse glutamatergic deficit models of behavior
... mice using the same PPI protocol, with 13 – 16 mice for the vehicle and MK-801 controls and 8 – 9 mice for the other treatment groups. In these PPI studies, the drug effect on the overall PPI measured at the three ... See full document
21
1 (4 Chlorophenyl) 2 [tris(4 methylphenyl) λ5 phosphanylidene]butane 1,3 dione
... chlorophenyl ring and the plane of the planar ylide moiety (defined by atoms P, C2, C3, O2, C4) is 66.15 (10)°. The geometry around the P atom is slightly distorted tetrahedral [angle range, 105.22 (8)–115.52 (9)Å]. The ... See full document
27
3 Mesityl 2 oxo 1 oxaspiro[4 4]non 3 en 4 yl 2 (4 chlorophenyl) 3 methylbutyrate
... 1978). 4-Hydroxyl-3-(2,4,6-trimethylphenyl)-1-oxaspiro[4,4]non-3-en-2-one is the key intermediate in preparing highly efficient acaricide-Spiromesifen developed by Bayer company (BAYER ... See full document
11
3 (4 Chlorophenoxy) 1 (4 methoxyphenyl) 4 (4 nitrophenyl)azetidin 2 one
... Data collection: CrysAlis PRO (Oxford Diffraction, 2007); cell refinement: CrysAlis PRO; data reduction: CrysAlis RED (Oxford Diffraction, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) ... See full document
277
5 Methyl 1 (3 nitrobenzyl) 1H 1,2,3 triazole 4 carboxylic acid monohydrate
... It is well known that many triazole-related molecules have received much attention due to their biological activities (Olesen et al., 2003; Tian et al., 2005). We report herein the crystal structure of the title ... See full document
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