Selenium induced stereoselective cyclization of N-protected 3-hydroxy-4-pentenylamines
作者:Matthew A. Cooper、A. David Ward
DOI:10.1016/s0040-4039(00)61110-3
日期:1992.9
The selenium induced cyclofunctionalization of N-protected 3-hydroxy-4-pentenylamine occurs regio- and steroselectively to give N-protected cis-2-(selenomethyl)-3-hydroxypyrrolidines in high yield. The rate of reaction and degree of stereoselectivity is shown to be dependent on the nature of the selenium reagent, reaction temperature and solvent.
Cyclizations using Selenium Chemistry for Substituted 3-Hydroxypiperidines and 3-Hydroxypyrrolidines
作者:Matthew A. Cooper、A. David Ward
DOI:10.1071/ch11073
日期:——
the stereoselectivesynthesis of nitrogen heterocycles is of current interest because of increasing demands for the syntheses of biologically important alkaloids and related compounds. It is shown that selenium-induced cyclization of 4-hydroxy-5-pentenylamines occurs regio- and stereo-selectively to afford cis-3-hydroxy-2-phenylselenomethylpyrrolidines, whereas 5-hydroxy-6-hexenylamines cyclize and