Selenium induced stereoselective cyclization of N-substituted-4-hydroxy-5-hexenylamines
摘要:
The selenium induced cyclization of N-substituted 4-hydroxy-5-hexenylamines occurs regio- and stereoselectively to give N-substituted trans-2-(phenylselenomethyl)-3-hydroxypiperidines in moderate yield. Synthesis of the biologically active diol (8) was achieved via oxidation of the phenylseleno moiety to the phenylselenone and subsequent displacement with sodium hydroxide.