Iodine → HCID 19705711, compound

Participants

Reaction Steps

To a solution of 6-methoxybenzo[b]thiophene (5.00 g, 30.49 mmol) in 200 mL of anhydrous THF at -78° C., was added n-butyllithium (20.0 mL, 32.01 mmol, 1.6M solution in hexanes). After stirring for 15 minutes, a solution of I2 (8.10 g, 32.01 mmol) in 25 mL of anhydrous THF was introduced dropwise via canula. The resulting mixture was allowed to gradually warm to ambient temperature. The reaction was quenched by distributing between ethyl acetate/brine (150 mL each). The layers were separated and the organic layer was dried over sodium sulfate. Concentration in vacuo produced a tan solid that was recrystallized from hexanes to provide 6.70 g (75%) of 6-methoxy-2-iodobenzo [b]thiophene. mp 75°-77° C. 1H NMR (CDCl3) d 7.59 (d, J=8.6 Hz, 1H), 7.42 (s, 1H), 7.22 (d, J=2.0 Hz, 1H), 6.92 (dd, J=8.6, 2.0 Hz, 1H) , 3.86 (s, 3H) . FD mass spec: 290. Anal. Calcd. for C9H7OSI: C, 37.26; H, 2.43. Found: C, 37.55; H, 2.43.

Provenance & Evidence