1579250-32-0Relevant articles and documents
Synthesis of quaternary carbon stereocenters by copper-catalyzed asymmetric allylic substitution of allyl phosphates with arylboronates
Takeda, Momotaro,Takatsu, Keishi,Shintani, Ryo,Hayashi, Tamio
, p. 2354 - 2367 (2014/04/17)
A copper-catalyzed asymmetric allylic substitution of γ,γ- disubstituted allyl phosphates with arylboronates has been developed for the construction of quaternary stereocenters. High regio- and enantioselectivities have been achieved by employing a hydroxy-bearing chiral N-heterocyclic carbene ligand, and both E and Z substrates provide the same enantiomer as the major product. The mechanistic aspect of this catalysis has also been investigated to find that a 1:1 copper/ligand complex is most likely responsible for the present asymmetric catalysis, and the reaction proceeds with almost perfect 1,3-anti stereochemistry with respect to the allylic electrophile.
