Chirality Sensing of α-Hydroxyphosphonates by N-tert-Butyl Sulfinyl Squaramide.
Yao LiGuo-Hui YangCyndi Qixin HeXin LiKendall N HoukJin-Pei ChengPublished in: Organic letters (2017)
N-tert-Butyl sulfinyl squaramides were used for chiral discrimination of α-hydroxyphosphonates using 31P NMR. A free energy relationship study indicates that both steric and the electronic effects influence the chiral recognition of the donors.