[4+2+2] Cycloaddition catalyzed by a new cationic rhodium–bisphosphine monooxide complex
作者:Gino Martin R. Canlas、Scott R. Gilbertson
DOI:10.1039/c4cc01320d
日期:——
A rhodium–BozPHOS based complex is reported that is competent in catalyzing the [4+2+2] cycloisomerization of cyclooctatrienes in moderate to good yields.
Stereoselective Synthesis of Polycycles Containing an Aziridine Group: Intramolecular aza-Diels-Alder Reactions of Unactivated 2H-Azirines with Unactivated Dienes
with a pendent diene can undergo thermal decomposition to a related azirine intermediate, which was used immediately in an intramolecular aza‐Diels–Alderreaction to furnish an aziridine‐containing trans‐fused tricyclic core structure with excellent stereoselectivity. The method provides a facile entry to complex polycyclic alkaliods which can be further elaborated by ring‐opening reactions and ring expansion