Methyl iodide → HCID 58780214, compound

Participants

Reaction Steps

To a −80° C. solution of (+/−)-3,3′-diiodo-2,2′-dimethoxy-1,1′-binaphthyl (2.016 g, 3.6 mmol) in THF (dry, distilled, 80 mL, 0.044 M) was added n-butyl lithium (2.8 mL, 3.9 mmol) dropwise. The reaction mixture turned yellow and was stirred for 1 h before the addition of methyl iodide (dry, distilled, 0.35 mL, 5.6 mmol). The reaction mixture was allowed to gradually warm to room temperature. After stirring for a further 3 h saturated aqueous ammonium chloride solution (4 drops) was added. The reaction mixture was evaporated to dryness, the residue taken up in diethyl ether and washed with water. The organic layer was dried (MgSO4), filtered and the filtrate evaporated to dryness to give a pale yellow solid. Purification of the crude material by flash column chromatography (4% ethyl acetate/hexane) yielded (+/−)-2,2′-dimethoxy-3-iodo-3′-methyl-1,1′-binaphthyl.

Provenance & Evidence