tert-Butyl 4-carbamoyl-3-methoxyimino-4-methylpiperidine-1-carboxylate
نویسندگان
چکیده
The title compound, C(13)H(23)N(3)O(4), was prepared starting from ethyl N-benzyl-3-oxopiperidine-4-carboxyl-ate through a nine-step reaction, including hydrogenation, Boc (tert-butoxy-carbon-yl) protection, methyl-ation, oximation, hydrolysis, esterification and ammonolysis. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds to form a porous three-dimensional network with solvent-free hydro-phobic channels extending along the c axis.
منابع مشابه
tert-Butyl 3-carbamoyl-4-methoxyimino-3-methylpiperidine-1-carboxylate
In the title compound, C(13)H(23)N(3)O(4), the piperidine ring adopts a chair conformation. An intra-molecular N-H⋯O hydrogen bond is observed between the carbamoyl and carboxyl-ate groups. In the crystal structure, mol-ecules form inversion dimers linked by pairs of N-H⋯O hydrogen bonds.
متن کاملtert-Butyl 3-[N-(tert-butoxycarbonyl)methylamino]-4-methoxyimino-3-methylpiperidine-1-carboxylate
The title compound, C(18)H(33)N(3)O(5), was prepared from N-tert-butoxy-carbonyl-4-piperidone using a nine-step reaction, including condensation, methyl-ation, oximation, hydrolysis, esterification, ammonolysis, Hoffmann degradation, tert-butoxy-carbonyl protection and methyl-ation. The E configuration of the methyl-oxime geometry of the compound is confirmed.
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The reaction of (E)-tert-butyl 4-[3-(dimethyl-amino)acrylo-yl]piperidine-1-carboxyl-ate with methyl-hydrazine leads to the formation of the title compound, C(14)H(23)N(3)O(2), with a 1-methyl-1H-pyrazol-5-yl substituent. The plane of the pyrazole ring forms a dihedral angle of 33.4 (1)° with the approximate mirror plane of the piperidine ring.
متن کاملtert-Butyl 4-formyl-1H-imidazole-1-carboxylate
In the crystal structure of the title compound, C(9)H(12)N(2)O(3), weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains. Further weak C-H⋯O hydrogen bonds together with π-π inter-actions [centroid-centroid distance = 3.672 (4) Å] between neighbouring chains lead to a double-chain structure propagating in [100].
متن کاملtert-Butyl 6-methyl-2-oxo-4-[4-(trifluoromethoxy)anilino]cyclohex-3-ene-1-carboxylate
In the title compound, C(19)H(22)F(3)NO(4), the dihedral angle between the benzene ring and the conjugated part of the enaminone ring is 42.5 (1)°. The ester substituent makes a dihedral angle of 81.3 (2)° with this latter moiety. The crystal structure is held together by strong N-H⋯O and weak C-H⋯O inter-molecular inter-actions. The enaminone ring is disordered over two orientations with relat...
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عنوان ژورنال:
دوره 64 شماره
صفحات -
تاریخ انتشار 2008