Water → HCID 86707568, compound

Participants

Reaction Steps

17.0 g (50.0 mmol) 1,3-dibromo-5-(2-methoxy-ethoxymethoxy)-benzene, 19.3 g (50.0 mmol) 2-[4-(3-benzyloxy-propoxy)-3-fluoro-phenyl]-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane and 41.3 g (150 mmol) sodium metaborate-tetrahydrate are suspended in 200 ml THF and 200 ml water and 1.6 g (2 mmol) palladium(dppf) are added. The mixture is heated overnight at reflux. After partial removal of the solvent and addition of 100 ml MTB ether, the mixture is acidified with 2M hydrochloric acid. The organic layer is separated and the aqueous layer is extracted three times with MTB ether. The combined organic layers are washed with sat. aq. sodium chloride solution, dried over sodium sulfate and the solvent is removed in vacuo. The crude product is filtered through silica gel with toluene/ethylacetate (7:3 to 1:1) to yield 4-(3-benzyloxy-propoxy)-3′-bromo-3-fluoro-5′-(2-methoxy-ethoxymethoxy)-biphenyl as a yellow oil.

Provenance & Evidence