Fig. 6: Asymmetric oxa-Diels–Alder reaction with an (SZn)-[ZnL(NCtBu)] catalyst. | Nature Communications

Fig. 6: Asymmetric oxa-Diels–Alder reaction with an (SZn)-[ZnL(NCtBu)] catalyst.

From: Asymmetric construction of tetrahedral chiral zinc with high configurational stability and catalytic activity

Fig. 6

a Reaction scheme. equiv. equivalents, ee enantiomer excess. b Single-crystal X-ray structure of rac-[ZnL(2)] (only the RZn form is shown here) in a ball-and-stick model. Hydrogen atoms except in the formyl group are omitted for clarity. Colour code: Zn, blue grey; C, grey; N, blue; O, red; F, yellow green; S, yellow. Dashed magenta lines denote suggested noncovalent interactions (a hydrogen bond and a π–π interaction). c A schematic representation of a plausible origin of the enantioselectivity.

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