1,4-Dioxane → HCID 20468250, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 10 g of the product of Step A, 300 ml of dioxane and 5 g of N-chlorosuccinimide was stirred at 20° C. for 20 hours and was then diluted with water. The mixture was extracted with ethyl acetate and the organic phase was washed with water and aqueous sodium chloride solution, was dried and evaporated to dryness. The residue was chromatographed over silica gel and was eluted with a 6-3-1 cyclohexane-chloroform-triethylamine mixture to obtain 11 g of 3-chloro-4-(1-trifluoroacetyl-piperidin-3-yl)-1H-indole which was used as is for the next step.

Provenance & Evidence