Studies on the Diastereoselective Intramolecular Pauson-Khand Reaction on Regioisomeric Chiral Perhydrobenzoxazines Derived from (-)-8-Aminomenthol
作者:Alicia Maestro、Rafael Pedrosa、Alfonso Pérez-Encabo、Juan J. Pérez-Rueda
DOI:10.1002/ejoc.201101462
日期:2012.2
Chiralperhydrobenzoxazinesderivedfrom (–)-8-aminomenthol and containing a 1,6-enyne moiety participate in intramoleculardiastereoselectivePauson–Khandreactions with diastereoselection that depends on the nature of the starting compounds. 3-Propargyl-2-vinyl-substituted perhydrobenzoxazines yielded the cyclization products with low diastereoselectivity except for compounds where the double bond