作者:Norbert De Kimpe、Matthias D’hooghe、Bruno De Meulenaer
DOI:10.1055/s-2008-1078171
日期:——
A variety of different N-(2,2,3-trichloropropylidene)amines, N-(2,2,3-trichlorobutylidene)amines, and N-(2,2,5-trichloropentylidene)amines were synthesized for the first time, and their reactivity with regard to hydride reagents was investigated. In this way, N-(2,2,5-trichloropentylidene)amines were evaluated as substrates for the synthesis of piperidines, and N-(2,2,3-trichloropropylidene)amines and N-(2,2,3-trichlorobutylidene)amines were reduced efficiently into the corresponding novel β,β,γ-trichloro-amines by means of sodium cyanoborohydride in methanol in the presence of acetic acid. Furthermore, N-(2,2,3-trichloropropylidene)amines were transformed into 2-(chloromethyl)aziridines by lithium aluminium hydride in Et2O, and N-(2,2,5-trichloropentylidene)acetamide was used for the first time as a suitable substrate for the addition of oxygen, nitrogen, and sulfur nucleophiles in good yields.
首次合成了一系列不同种类的N-(2,2,3-三氯丙亚甲基)胺、N-(2,2,3-三氯丁亚甲基)胺和N-(2,2,5-三氯戊亚甲基)胺,并研究了它们与氢化物试剂的反应活性。通过这种方式,评估了N-(2,2,5-三氯戊亚甲基)胺作为合成哌啶的底物,而N-(2,2,3-三氯丙亚甲基)胺和N-(2,2,3-三氯丁亚甲基)胺则通过在乙酸存在下使用甲醇中的氰基硼氢化钠高效还原为相应的新的β,β,γ-三氯胺。此外,N-(2,2,3-三氯丙亚甲基)胺通过在乙醚中使用铝锂氢还原转化为2-(氯甲基)氮杂环丁烷,而N-(2,2,5-三氯戊亚甲基)乙酰胺首次被用作适合的底物,用于在良好产率下添加氧、氮和硫亲核试剂。