An efficient chemoenzymatic method to prepare optically active primary–tertiary trans-cycloalkane-1,2-diamines
作者:F. Javier Quijada、Javier González-Sabín、Francisca Rebolledo、Vicente Gotor
DOI:10.1016/j.tet.2009.07.035
日期:2009.9
Opticallyactive trans-N-Boc-cyclopentane- and cyclohexane-1,2-diamines (7) were prepared by a chemoenzymatic method from the corresponding (±)-trans-N,N-diallylcycloalkane-1,2-diamine. These mono-carbamates 7 (ee=99%) were used as the starting materials in the syntheses of different vicinal primary–tertiary diamines. Thus, by means of a simple three-step sequence involving a reductive-amination of