Aminyl radical cyclization by means of anodic oxidation. Stereoselective synthesis of -1-methyl-2,5-disubstituted pyrrolidines
作者:Masao Tokuda、Yasufumi Yamada、Toshiya Takagi、Hiroshi Suginome、Akio Furusaki
DOI:10.1016/s0040-4039(00)95132-3
日期:1985.1
Neutral aminyl radicals generated by anodic oxidation of lithium alkenylamides 2 undergo a stereoselective cyclization to give -1-methyl-2,5-disubstituted pyrrolidines 4. Their stereochemistry was confirmed by a comparison with -1,2-dimethyl-5-phenylpyrrolidine, the structure of which was established by X-ray crystallographic analysis of its quarternary ammonium bromide 6.
由烯基酰胺锂2的阳极氧化产生的中性氨基自由基经过立体选择性环化,得到-1-甲基-2,5-二取代的吡咯烷4。通过与-1,2-二甲基-5-苯基吡咯烷进行比较,证实了它们的立体化学。其结构是通过对其季铵溴化物6进行X射线晶体学分析确定的。