Abstract
Transition-metal-catalyzed asymmetric carbon-carbon bond formation to forge phosphonates with an α-chiral carbon center through C(sp3 )-C(sp3 ) and C(sp2 )-C(sp3 ) couplings has been successful. However, the enantioselective C(sp)-C(sp3 ) coupling has not yet been disclosed. Reported herein is an unprecedented enantioconvergent cross-coupling of alkynyl bromides and α-bromo phosphonates to deliver chiral α-alkynyl phosphonates.
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