4-Methylbenzaldehyde and 2-methylbenzaldehyde are oxidated by iodine in the mixture of THF and ammonia water at room temperature to give p-tolunitrile and o-tolunitrile in 87.1% and 82.0% yield respectively.p-Tolunitr...4-Methylbenzaldehyde and 2-methylbenzaldehyde are oxidated by iodine in the mixture of THF and ammonia water at room temperature to give p-tolunitrile and o-tolunitrile in 87.1% and 82.0% yield respectively.p-Tolunitrile is nitrated with fuming nitric acid in concentrated sulfuric acid below 0℃ to produce 4-methyl-3-nitrobenzonitrile in 88.4% yield,and for o-tolunitrile to afford 2-methyl-5-nitrobenzonitrile in 79.6% yield.Their structures are characterized by IR and 1H NMR spectra respectively.展开更多
Five 2 methyl 5 nitroimidazol derivatives were synthesized primarily from oxalaldehyde,ethanal via cyclization,nitration,esterification.The strutures of these compounds have been examined and confirmed by IR, 1H NMR,U...Five 2 methyl 5 nitroimidazol derivatives were synthesized primarily from oxalaldehyde,ethanal via cyclization,nitration,esterification.The strutures of these compounds have been examined and confirmed by IR, 1H NMR,UV spectra as well as elementary analysis.展开更多
文摘4-Methylbenzaldehyde and 2-methylbenzaldehyde are oxidated by iodine in the mixture of THF and ammonia water at room temperature to give p-tolunitrile and o-tolunitrile in 87.1% and 82.0% yield respectively.p-Tolunitrile is nitrated with fuming nitric acid in concentrated sulfuric acid below 0℃ to produce 4-methyl-3-nitrobenzonitrile in 88.4% yield,and for o-tolunitrile to afford 2-methyl-5-nitrobenzonitrile in 79.6% yield.Their structures are characterized by IR and 1H NMR spectra respectively.
文摘Five 2 methyl 5 nitroimidazol derivatives were synthesized primarily from oxalaldehyde,ethanal via cyclization,nitration,esterification.The strutures of these compounds have been examined and confirmed by IR, 1H NMR,UV spectra as well as elementary analysis.