2-<4-Nitro-benzoyl-malodinitril vom F:198grad;4-Nitrobenzoyl-malondinitril;<4-Nitro-benzoyl>-malonsaeure-dinitril;<4-Nitro-benzoyl>-malononitril;(4-nitro-benzoyl)-malononitrile;p-Nitrobenzoyl-malodinitril;Propanedinitrile, 2-(4-nitrobenzoyl)-;2-(4-nitrobenzoyl)propanedinitrile
One-pot synthesis of tetrasubstituted pyrazoles—proof of regiochemistry
摘要:
1-Alkyl-5-amino-3-aryl-4-cyanopyrazoles, useful intermediates for fused heterocyclic systems, are synthesised by a one-pot three-step procedure from acid chlorides, malononitrile and alkylhydrazines, The regiochemistry of the hydrazine incorporation was proved in each case by X-ray crystallography and NMR spectroscopy.
Electrolytic oxidation of ketones in a methanolic solution of sodium cyanide in the presence of catalytic amounts of potassium iodide
摘要:
The indirect electrolytic oxidation of ketones (1) in methanolic sodium cyanide was studied using iodide ion as a mediator. The product and the reactivity of ketone were dependent on the nature of the alkyl groups attached to the carbonyl group. Thus, 2-alkyl and 2,2-dialkyl ketones afforded the corresponding oxiranecarbonitriles 2 along with small amounts of methyl oxiranecarboximidate 3, whereas acetophenones exclusively yielded benzoylpropanedinitriles 4.