Synthesis of hindered secondary amines via Grignard reagent addition to ketonitrones
作者:Martin A. Schwartz、Xiufeng Hu
DOI:10.1016/s0040-4039(00)91707-6
日期:1992.3
Grignard reagents add to ketonitrones in a nonpolar solvent to afford N,N-dialkylhydroxylamines in good yields and with little competing proton transfer. Deoxygenation of the crude hydroxylamines with carbon disulfide then completes an efficient general synthetic route to hindered sec-alkyl-tert-alkylamines and to di-tert-alkylamines.
格氏试剂在非极性溶剂中加到酮硝酮中,以良好的收率和极少的质子转移竞争性获得N,N-二烷基羟胺。然后用二硫化碳对粗羟胺进行脱氧,从而完成了一条有效的通用合成路线,可生成受阻的仲烷基叔烷基胺和二叔烷基胺。