(R)-2,3-Dihydrobenzo[1,4]dioxine-2-carbonyl chloride → (2R)-N-{[7-(1-Hydroxycyclopentyl)-6,7-dihydrocyclobuta[g][1]benzofuran-7-yl]methyl}-2,3-dihydro-1,4-benzodioxine-2-carboxamide

Participants

Reaction Steps

A solution of 762 mg of (2R)-2,3-dihydrobenzo[1,4]dioxin-2-ylcarboxylic acid chloride is added, at 0° C., to 900 mg of the compound obtained in Step A in 30 ml of dichloromethane and 1.2 ml of diisopropylethylamine. After 48 hours at room temperature, the reaction mixture is diluted with water and extracted with dichloromethane. Conventional treatment of the organic phases enables, after evaporation under reduced pressure, the expected product to be isolated in the form of a meringue.

Provenance & Evidence