2-Amino-1-methyl-1H-imidazole-4,5-dione: Synthesis and the Dimroth Type Rearrangement to Creatone (2-Methyl-amino-1H-imidazole-4,5-dione)
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چکیده
منابع مشابه
Crystal structures of the two salts 2-methyl-1H-imidazol-3-ium nitrate–2-methyl-1H-imidazole (1/1) and 2-methyl-1H-imidazol-3-ium nitrate
The title salts, C4H7N2 (+)·NO3 (-)·C4H6N2, (I), and C4H7N2 (+)·NO3 (-), (II), were obtained from solutions containing 2-methyl-imidazole and nitric acid in different concentrations. In the crystal structure of salt (I), one of the -NH H atoms of the imidazole ring shows half-occupancy, hence only every second mol-ecule is in its cationic form. The nitrate anion in this structure lies on a twof...
متن کامل1-Methyl-5-nitro-1H-imidazole
In the title compound, C(4)H(5)N(3)O(2), the nitro group is twisted with respect to the imidazole ring by a dihedral angle of 5.60 (2)°. Weak inter-molecular C-H⋯O and C-H⋯N hydrogen bonding is present in the crystal structure.
متن کامل1-Methyl-4,5-dinitro-1H-imidazole
In the title compound, C(4)H(4)N(4)O(4), the two nitro groups are twisted with respect to the imidazole plane, making dihedral angles of 24.2 (3) and 33.4 (4)°. In the crystal structure, the mol-ecules are linked through non-classical inter-molecular C-H⋯O hydrogen bonds.
متن کامل2-{[(E)-2-Hydroxybenzylidene]amino}-1H-isoindole-1,3(2H)-dione
In the title compound, C(15)H(10)N(2)O(3), the isoindoline ring system is almost planar [maximum deviation = 0.020 (2) Å] and makes a dihedral angle of 1.57 (7)° with the benzene ring. Intra-molecular O-H⋯N and C-H⋯O hydrogen bonds are observed.
متن کامل1-(2-Hydroxyethyl)-3-[(2-hydroxyethyl)amino]-4-(1H-indol-3-yl)-1H-pyrrole-2,5-dione
There are four molecules in the asymmetric unit of the title compound, C(16)H(17)N(3)O(4), in which the dihedral angles between the indole ring system and maleimide ring are 4.5 (3), 8.3 (3), 8.4 (2) and 10.4 (2)°. In the crystal, mol-ecules are linked by numerous N-H⋯O and O-H⋯O hydrogen bonds, generating a three-dimensional network.
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1987
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.60.4115