Diastereoselective Synthesis of Phosphinic Dipeptide Isosteres: Domino Chirality Transfer during a Stereocontrolled P-Michael Reaction
Angelos Lelis,
Nikolaos Skoulikas,
Mirto Papathanasopoulou
et al.
Abstract:A highly diastereoselective P-Michael
addition of chiral aminophosphinic
acids to achiral acrylates has been developed, leading to phosphinic
dipeptide isosteres in high yields and dr of up to >50:1. The method
allows for the diastereoselective preparation of target compounds
without the need for chiral auxiliaries or P-chiral substrates. A
possible mechanistic explanation involves a domino chirality transfer
from the aminophosphinic acid to the P center, amplified by a crucial
benzhydryl ester group, and then… Show more
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