检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]武警医学院继续教育处,天津300162 [2]武警医学院化学教研室,天津300162
出 处:《武警医学院学报》2006年第4期308-310,共3页Acta Academiae Medicinae CPAPF
摘 要:【目的】研究N-甲基羟胺与O-甲基羟胺对不饱和硝基化合物的加成反应。【方法】N-甲基羟胺和O-甲基羟胺分别与不饱和硝基化合物进行亲核加成,反应产物通过色谱分离后计算产率并经1HNMR进行结构确认;利用Gaussian计算程序,由AM1半经验方法得到加成产物的最稳定构象。【结果】1HNMR图谱证实了加成产物结构的正确性;计算得到产物的产率及最稳构象。【结论】通过本实验方法可以得到目标产物,产物的产率提示N-甲基羟胺的加成反应具有立体选择性。【Objective】To study the nucleophilic addition of N-methylhydroxylamine and O-methylhydroxylamine to unsaturated nitro compounds.【Methods】Unsaturated nitro compounds proceeding nucleophilic addition reaction with N-methylhydroxylamine and O-methylhydroxylamine respectively.After the products being separated by HPLC,the yields were calculated and the structure of products was verified by()~1HNMR.The most stable conformation of the addition product was obtained through Gaussian program calculation.【Results】The structure of products were confirmed by()~1HNMR.The most stable conformation of products were got by Gaussian program calculation,and the yield was calculated.【Conclusion】The desired products were got via the empirical method in this paper.The yield of products imply that the nucleophilic addition of Nmethylhydroxylamine to unsaturated nitro compounds give stereoselectivity.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.249