2,3-Dichlorobenzoyl chloride → HCID 69527429, compound

Participants

Reaction Conditions

Reaction Steps

10.7 g of 7-bromo-2-methyl-1H-indole are placed in 100 ml of THF and the mixture is cooled to −10° C. 22 ml of 3M methylmagnesium bromide in ether are added at this temperature. The mixture is allowed to return to AT and is then cooled to −5° C. and 13.5 g of 2,3-dichlorobenzoyl chloride, dissolved in 80 ml of THF, are added dropwise. The medium is allowed to return to AT and is then poured onto a saturated NH4Cl solution. Extraction is carried out with ether and then the organic phase is washed with a 10% NaOH solution, water and a saturated NaCl solution. It is dried and evaporated and the residue is chromatographed on silica while eluting with an AcOEt/cyclohexane (10/90, v/v) mixture. The product obtained crystallizes from ether and 5 g of the expected compound are obtained.

Provenance & Evidence