Procedure for the Rate Study. The reduction of phenylmalonic acid is representative. Two 50- mL round-bottom flasks with side arm were dried in an oven and cooled down in a dry nitrogen atmosphere. The first flask was equipped with a rubber syringe cap, a magnetic stirring bar, and a reflux condenser, connected to a gas buret. Then 3 mL (1.5 mmol) of a 0.5 M solution of phenylmalonic acid was injected into the reaction flask, followed by 4.5 mL of ...
![1'-benzoyl-2'-(3-methoxybenzoyl)-5'-methylspiro[1H-indole-3,3'-2,3a-dihydro-1H-pyrrolo[1,2-a]quinoline]-2-one Structure](https://image.chemsrc.com/caspic/263/4572-26-3.png)
