Synthesis of Novel Restricted Diamines; 2-(1 -Aminocycloalkan-1-YL)ethylamines
作者:Takeshi Suzuki、Naoki Imanishi、Hirotsune Itahana、Susumu Watanuki、Mitsuaki Ohta、Toshiyasu Mase
DOI:10.1080/00397919808005943
日期:1998.2
Abstract Novel restricted diamines, 2-(1-aminocycloalkan-1-yl)ethylamines 1, were prepared by using Michael addition of ethyl cyclohexylideneacetate 2 and cycloalkylideneacetonitriles 7 with amines. In Michael addition, ester 2 needed high reaction temperature and gave several products, whereas 7 reacted smoothly and gave 2-(1-amino-1-cyclohexyl)acetonitriles 8 in good yield (NH3 85%, MeNH2 89% EtNH2