Highly efficient construction of spirocyclic chromanone–pyrrolidinesviaCu(i)/TF–BiphamPhos-catalyzed asymmetric 1,3-dipolar cycloaddition?

Chemical Communications Pub Date: 2011-07-29 DOI: 10.1039/C1CC13554F

Abstract

A facile synthesis of highly functional spiro-[4-chromanone-3,3′-pyrrolidine] bearing one unique spiro quarternary and three tertiary stereogenic centers is developed in excellent stereoselectivity for the first time.

Graphical abstract: Highly efficient construction of spirocyclic chromanone–pyrrolidinesviaCu(i)/TF–BiphamPhos-catalyzed asymmetric 1,3-dipolar cycloaddition
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