A short and efficient diastereoselective synthesis of 3,3-bipiperidine and 3,3-bis(1,2,3,6-tetrahydropyridine) was accomplished using a tandem ring-opening metathesis/ring-closing metathesis (ROM/RCM) sequence as a key step. This strategy has been extended to the synthesis of the oxygenated analogues.
A New Synthesis of 2-Azabicyclo[2.1.1]hexanes
作者:Cyrille Lescop、Laurence Mévellec、François Huet
DOI:10.1021/jo001790y
日期:2001.6.1
An efficient synthesis of the 2-azabicyclo[2.1.1]hexane ring system has been accomplished starting from cis-cyclobut-3-ene-1,2-dicarboxylic anhydride 7, which was prepared using a photochemical method. The key step of this new strategy involved a stereoselective electrophilic addition of phenylselenyl bromide to the double bond of cyclobutene dicarbamate 16 derived from 7. The subsequent ring closure