Unprecedented Effects of Achiral Oxazolidinones on Enantioselective Radical-Mediated Conjugate Additions Using a Chiral Zinc Triflate
摘要:
[GRAPHICS]A role of achiral oxazolidinones to enhance the enantioselectivity in reactions of N-cinnamoyloxazolidinones with alkyl radicals promoted by a chiral Lewis acid Is described. Efficient enantioselective radical-mediated conjugate additions of N-cinnamoyloxazolidinone can be realized by use of a chiral zinc triflate generated from a readily prepared chiral bisoxazoline and an achiral oxazolidinone. The NH moiety of achiral oxazolidinones is found to be necessary to enhance the enantioselectivity.
Unprecedented Effects of Achiral Oxazolidinones on Enantioselective Radical-Mediated Conjugate Additions Using a Chiral Zinc Triflate
摘要:
[GRAPHICS]A role of achiral oxazolidinones to enhance the enantioselectivity in reactions of N-cinnamoyloxazolidinones with alkyl radicals promoted by a chiral Lewis acid Is described. Efficient enantioselective radical-mediated conjugate additions of N-cinnamoyloxazolidinone can be realized by use of a chiral zinc triflate generated from a readily prepared chiral bisoxazoline and an achiral oxazolidinone. The NH moiety of achiral oxazolidinones is found to be necessary to enhance the enantioselectivity.
[GRAPHICS]A role of achiral oxazolidinones to enhance the enantioselectivity in reactions of N-cinnamoyloxazolidinones with alkyl radicals promoted by a chiral Lewis acid Is described. Efficient enantioselective radical-mediated conjugate additions of N-cinnamoyloxazolidinone can be realized by use of a chiral zinc triflate generated from a readily prepared chiral bisoxazoline and an achiral oxazolidinone. The NH moiety of achiral oxazolidinones is found to be necessary to enhance the enantioselectivity.