[PDF] Top 20 A second monoclinic polymorph of 4 (2 hydroxy 4 methoxybenzylideneamino) 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
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A second monoclinic polymorph of 4 (2 hydroxy 4 methoxybenzylideneamino) 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... and 4-methoxy-2-hydroxybenzaldehyde in methanol, is the second monoclinic polymorph of this compound which crystallizes in the space group ... See full document
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A second monoclinic polymorph of 4 [(E) (4 benzyloxybenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... pyrazolone ring. The benzene ring and the N atom of the pyrazole ring bearing the phenyl substituent are disordered over two sets of sites with an occupancy ratio of 0.71 (2):0.29 (2). The N atoms of ... See full document
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1 (5 Hydroxy 3 methyl 1 phenyl 1H pyrazol 4 yl)ethanone: a new monoclinic polymorph
... (Table 1); this feature is also present in the C2/c ...(Fig. 2 and Table ...the phenyl ring (centroid Cg2) of molecule A and some H atoms of the acetyl groups of both molecules (Table ... See full document
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4 [(2 Hydroxy 3 methoxybenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... of 2-hydroxy-3-methoxy- benzaldehyde (o-vanillin, ...of 4-amino-1,5-dimethyl-2-phenylpyrazol-3- one (4-aminoantipyrine, ...for 5 h under nitrogen, whereupon ... See full document
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4 [(Z) (Benzylamino)phenylmethylene] 5 methyl 2 phenyl 2H pyrazol 3 one
... to 5- methyl-2-phenyl-4-[(Z)-(2-tolylamino)phenylmethylene]-2H- pyrazol-3-one (Bao et ...2004), one of a class of pyrazolones that are readily ... See full document
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4 {[(2 Hydroxy 1 naphthyl)methylidene]amino} 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... by 0.166 (4) A ˚ , whereas atoms C14 and C15 deviate from it, on the other side, by 0.123 (5) and 0.456 (5) A ˚ , respectively. Atom O4 deviates from the other pyrazoline mean plane by 0.091 ... See full document
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4 [(4 Methoxybenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... 9.40 (6)°, respectively. Intramolecular C—H···O hydrogen bonding stabilizes the molecular conformation, while intermolecular C—H···O hydrogen bonding stabilizes the crystal structure; geometric details are given in Table ... See full document
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1,5 Dimethyl 2 phenyl 4 [phenyl(pyridin 2 ylamino)methyl] 1H pyrazol 3(2H) one
... of 2-amino pyridino benzyl antipyrine (APBA) is shown in Figure ...into one-dimensional chains which run parallel to the a-axis, Table 1, Figure ... See full document
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(E) 4 [(2 Bromobenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... C16 0.038 (3) 0.078 (3) 0.082 (3) −0.008 (2) −0.005 (2) −0.007 (3) C17 0.041 (3) 0.053 (3) 0.050 (2) 0.001 (2) 0.0040 (18) 0.0081 (19) C18 0.059 ... See full document
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4 [(3 Hydroxybenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... An anhydrous ethanol solution of 3-hydroxybenzaldehyde (1.22 g, 10 mmol) was added to an anhydrous ethanol solution of 4-amino- 1,5-dimethyl-2-phenylpyrazolidin-3-one (2.03 g, 10 ... See full document
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4 [(4 Hydroxybenzylidene)amino] 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one monohydrate
... In the molecular structure, the central system (N1–N3/C3– C6/C13/O2) is planar, with an r.m.s. deviation of fitted atoms of 0.0451 A ˚ , and the dihedral angle with the phenyl ring (C7– C12) is 89.93 (4) . ... See full document
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(Z) 4 [(2 Amino 4,5 dichloroanilino)(phenyl)methylidene] 3 methyl 1 phenyl 1H pyrazol 5(4H) one
... Asymmetrical Schiff bases are of interest due to their catalytic activity and the selectivity of their transition metal complexes in various reactions. Several asymmetrical Schiff base ligands and their transition metal ... See full document
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A second polymorph of (Z) 3 amino 4 (2 phenylhydrazinylidene) 1H pyrazol 5(4H) one
... The molecule of It is shown in Fig. 1. Molecular dimensions, such as the bond lengths C4═N4 1.3070 (10) and N4—N5 1.3128 (9) Å, may be regarded as normal. A search of the Cambridge Database (Allen, 2002; Version ... See full document
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4 [(Ethoxyimino)(phenyl)methyl] 5 methyl 2 phenyl 1H pyrazol 3(2H) one
... hydrogen bond forms a six-membered ring, producing an S(6) ring motif. In the crystal structure, intermolecular N—H O and C—H O hydrogen bonds link each molecule to two others, forming an infinite one-dimensional ... See full document
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4 [(5 Hydroxy 3 methyl 1 phenyl 1H pyrazol 4 yl)phenylmethyl] 5 methyl 2 phenyl 1H pyrazol 3(2H) one ethanol hemisolvate
... The bond lengths (Allen et al., 1987) and angles in the title compound have normal values. The asymmetric unit of the title compound, is composed of two crystallographically independent molecules (A and B) with slightly ... See full document
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4 {[3,4 Dihydro 5 methyl 3 oxo 2 phenyl 2H pyrazol 4 ylidene](phenyl)methylamino} 1,5 dimethyl 2 phenyl 1H pyrazol 3(2H) one
... in 4-[(2-hydroxyphenylamino)phenylmethylene]-5- methyl-2-phenyl-2H-pyrazol-3(4H)- one (Wang, Zhang & Miao, ...(Table 1) lie between the ... See full document
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4 [(Z) (2 Fluorenylamino)phenylmethylene] 5 methyl 2 phenyl 2H pyrazol 3(4H) one
... on 4-[(Z)-(2-arylamino)phenyl- methylene]-5-methyl-2-phenyl-2H-pyrazol-3-ones (Bao et ...was 2-amino¯uorene; the amine itself features ... See full document
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2 [(5 Amino 3 methyl 1 phenyl 1H pyrazol 4 yl)(4 chlorophenyl)methyl]malononitrile
... and 5-amino-3-methyl-1-phenylpyrazole (1 mmol) were ...for 4 h and afterwards extracted five times with 2 ml of ... See full document
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Ethyl 5 amino 1 (5 amino 3 methyl 1 phenyl 1H pyrazol 4 ylcarbonyl) 3 methyl 1H pyrazole 4 carboxylate
... N-bound H atoms were located in a difference Fourier map and refined freely. The remaining H atoms were positioned geometrically and treated as riding atoms, with C—H distances of 0.93 (CH), 0.96 (CH 3 ) or 0.97 A ... See full document
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4 [(2 Benzoyl 4 chlorophenyl)diazenyl] 3 methyl 1 phenyl 1H pyrazol 5(4H) one
... 2-Amino-5-chlorobenzophenone (2.32 g, 0.01 mol) was suspended in strong hydrochloric acid (20 ml, pH ca. 5) at 273 K. A solution of sodium nitrite (0.69 g in 15 ml water) was added. Following ... See full document
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