Propionyl chloride → Methyl 4-[[5-chloro-3-(2-chlorophenyl)-2,3-dihydro-2-oxo-3-propionamidoindol-1-yl]methyl]-3-methoxybenzoate

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Reaction Steps

0.52 g of propionyl chloride is added at RT to a solution of 1.323 g of the compound obtained in EXAMPLE 89 in 5 ml of pyridine and the mixture is stirred for 24 hours. It is concentrated under vacuum, the residue is extracted with AcOEt, the organic phase is washed with water and with a saturated solution of NaCl and dried over sodium sulfate and the solvent is evaporated off under vacuum. The residue is chromatographed on silica using a DCM/AcOEt mixture (90/10; v/v) as the eluent to give 1.3 g of the expected product.

Provenance & Evidence