反应详情

In a 25 ml round-bottomed flask, 1H-indazole-5-carbonitrile (400 mg, 2.79 mmol) was dissolved in DMF (7 ml). Potassium hydroxide (607 mg, 10.8 mmol) was added followed by iodine (1.42 g, 5.59 mmol). The dark brown suspension was stirred at room temperature for 3 h then was quenched with 10% aqueous NaHSO3 and extracted with diethyl ether (2×). The combined organic layers were washed twice with water and once with brine then dried over sodium sulfate, filtered and concentrated to give 396 mg (53%) of 3-iodo-1H-indazole-5-carbonitrile as a light yellow powder.

1. customthen was quenched with 10% aqueous NaHSO3
2. extractionextracted with diethyl ether (2×)
3. washThe combined organic layers were washed twice with water and once with brine
4. dry with materialthen dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated