nitroso compound造句

• The resultant nitroso compounds undergoes tautomerization to the isolated oxime product.
• Another named reaction involving a nitroso compound is the Barton reaction.
• The reaction of nitrosyl chloride with aromatic alcohols generally yields nitroso compounds and other over-oxidation products.
• Red meat itself contains certain factors that, under certain conditions, produce carcinogens like N-nitroso compounds ( NOCs ).
• The first such compound was prepared in 1974 reaction of the nitroso compound N, N-dimethyl-p-nitrosoaniline with tetraphosphorus decasulfide.
• The nitrite then reacts with protein-rich foods ( such as meat ) to produce carcinogenic NOCs ( nitroso compounds ).
• The nitroso compound is a persistent radical like TEMPO . It is especially useful in oxidations of anilines and phenols to quinones.
• Replacing the red meat with the same amount of chicken or fish resulted in a drop in the N-Nitroso compounds back to normal.
• There is no proof that N-Nitroso compounds in the colon are toxic, but the circumstantial evidence is strong that it might be, experts said.
• In the case of nitrogen-containing compounds, known transformations include oximes ), nitrosoamines to nitramines, and conversion of nitroso compounds to nitro compounds or nitramines.
• Lab tests have shown that the combination of red meat and colon bacteria produces chemicals called N-Nitroso compounds, some of which are cancerous, Bingham said.
• According to one series of studies the mercury nitrate first takes benzene to the corresponding nitroso compound and through the diazonium salt to the phenol.
• Nitroxyl donors, known as nitroso compounds, show potential in the treatment of heart failure and ongoing research is focused on finding new molecules for this task.
• Workers regularly exposed to substances like acrylonitrite, vinyl chloride, formaldehyde, lubricating oils, N-nitroso compounds, phenols, pesticides, polycyclic aromatic hydrocarbons and organic solvents develop brain tumors with greater than average frequency.
• In fact, at the high level of red meat consumption, the level of N-Nitroso compounds which were present in the fecal material was equivalent to the concentration that is found in tobacco smoke,
• However, because it is unstable at temperatures beyond 20 癈 and somewhat shock-sensitive, it has become obsolete for this purpose and replaced by other N-nitroso compounds : ( " N "-methyl ) nitrosamides and nitrosamines.
• 6-O-methylguanine is formed in DNA by alkylation of the oxygen atom of guanine, most often by N-nitroso compounds ( NOC ) and sometimes due to methylation by other compounds such as alkylating agents formed by the reaction of nitrite or other nitrogen oxides with secondary amines and N-alkylamides, yielding N-alkylnitrosamines and N-alkylnitrosamides.