Fig. 2: Reactions of NaAB with various esters in THF.

Reaction conditions: ester (0.5 mmol), NaAB (2.4 equiv), THF (5 mL), room temperature for 5 min and then hydrolysis. a, bThe substrate esters are dihydrocoumarin and valerolactone, respectively.
Reaction conditions: ester (0.5 mmol), NaAB (2.4 equiv), THF (5 mL), room temperature for 5 min and then hydrolysis. a, bThe substrate esters are dihydrocoumarin and valerolactone, respectively.