Synthesis of trans-perhydroisoquinolines by 6-endo-trig radical cyclization of amino-tethered vinyl bromides and cyclohexenes
摘要:
Bu3SnH-promoted cyclization of several N-(2-bromoprop-2-enyl)-N-[(4-oxocyclohex-l-enyl)methyl]alkylamines is reported. It has been found that the generated vinyl radicals evolve through a 6-endo-cyclization pathway giving rise to the corresponding 4,6-functionalized perhydroisoquinolines in a prevalent trans-relative configuration. (c) 2006 Elsevier Ltd. All rights reserved.