4-Methylbenzoyl Chloride → HCID 53783109, compound

Participants

Reaction Steps

A solution of 20.6 g of 6-methoxy-indane-1-carboxylic acid methyl ester in a little methylene chloride is first slowly added dropwise, at 0° C. to 10° C., to a suspension of 66.8 g of finely powdered aluminium chloride in 100 ml of methylene chloride, which is being stirred under anhydrous conditions; 46.3 g of p-methylbenzoyl chloride are then added dropwise under such conditions that the reaction mixture boils gently under reflux. After completion of the addition, the mixture is heated to the boil for a further 31/2 hours. It is then allowed to cool to room temperature, poured onto 500 g of ice and extracted with twice 500 ml of methylene chloride. The organic phases are washed until neutral, dried over sodium sulphate and evaporated in vacuo (finally in a high vacuum). The evaporation residue, when crystallised from cold ether-petroleum ether, gives 5-(p-toluoyl)-6-hydroxyindane-1-carboxylic acid methyl ester which after a further crystallisation from ethanol-petroleum ether, melts at 74°-76° C.

Provenance & Evidence