1-Phenyl-3-(quinolin-5-yl)urea as a host for distinction of phthalic acid and terephthalic acid
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چکیده
منابع مشابه
Glycine–phthalic acid (1/1)
In the title compound, C2H5NO2·C8H6O4, the glycine mol-ecule exists as a zwitterion (2-aza-niumyl-ethano-ate) with a positively charged amino group and a negatively charged carboxyl-ate group. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link the components into layers parallel to the ab plane. The central part of each layer is composed of hydrogen-bonded glycine zwitterions, while phthalic a...
متن کامل4,4′-Bipyridine–terephthalic acid (1/1)
The asymmetric unit of the title compound, C(10)H(8)N(2)·C(8)H(6)O(4), consists of one half-mol-ecule of each moiety, 4,4'-bipyridine (bpy) and terephthalic acid (bdc), both being located on crystallographic inversion centers. They are linked together via strong inter-molecular O-H⋯N hydrogen bonds, forming infinite chains propagating along [1-21]. The chains are further connected through C-H⋯O...
متن کاملTerephthalic acid–4,4′-bipyridine (2/1)
In the title compound, 2C(8)H(6)O(4)·C(10)H(8)N(2), the 4,4'-bipyridine mol-ecule is located on an inversion centre. In the crystal structure, strong inter-molecular O-H⋯N hydrogen bonds between the terephthalic acid and 4,4'-bipyridine mol-ecules lead to the formation of chains with graph-set motif C(2) (2)(8) along the diagonal of the bc plane.
متن کاملOptical Resolution of 5-Oxo-1-phenyl-pyrazolidine-3-carboxylic Acid as a New Organocatalyst for Organic Reactions
Optical resolution of racemic 5-oxo-1-phenyl-pyrazolidine-3-carboxylic acid 2 with L-amino acid methyl ester via the diastereomers formation was investigated. Treatment of racemic 5-oxo-1-phenylpyrazolidine-3-carboxylic acid 2 with L-valine methyl ester gave diastereomers with a total yield of 86%. The diastereomeric dipeptides can be easily separated by flash column chromatography. Acidic clea...
متن کامل1,4-Bis(imidazol-1-yl)benzene–terephthalic acid (1/1)
In the title compound, C(12)H(10)N(4)·C(8)H(6)O(4), 1,4-bis-(imidazol-1-yl)benzene and terephthalic acid mol-ecules are joined via strong O-H⋯N hydrogen bonds to form infinite zigzag chains. Both mol-ecules are located on crystallographic inversion centers. The O-H⋯N hydrogen-bonded chains are assembled into two-dimensional layers through weak C-H⋯O and strong π-π stacking inter-actions [centro...
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ژورنال
عنوان ژورنال: Journal of Chemical Sciences
سال: 2013
ISSN: 0974-3626,0973-7103
DOI: 10.1007/s12039-013-0376-z