Cesium carbonate → HCID 69939744, compound

Participants

Reaction Steps

450 mg (1.30 mmol) of the compound from Example 4A and 715 mg (2.19 mmol) of cesium carbonate were suspended in 6 ml of acetonitrile, and 708 mg (1.61 mmol) of methyl 4-bromo-2-(bromomethyl)benzoate were added. The mixture was stirred under reflux for 20 h. The precipitated solid was filtered off and the filtrate was concentrated under reduced pressure to a volume of about 1.5 ml. After addition of 1 ml of 1 N hydrochloric acid, the mixture was directly purified chromatographically [Method 19]. This gave 545 mg (64% of theory) of the target compound in a purity of 92%.

Provenance & Evidence