反应详情

温度

75 °C

Prepared using General Procedure 1. To a flask containing benzofuran-5-carbonitrile (200 mg, 0.73 mmol) was added EtOH (6 mL), hydroxylamine hydrochloride (176.7 mg, 2.54 mmol) and Na2CO3 (154 mg, 1.42 mmol). The mixture was stirred at 75° C. overnight then concentrated, re-dissolved in DCM and washed with NaHCO3. The combined organic layers were dried over Na2SO4, and concentrated to provide 222 mg of crude N-hydroxybenzofuran-5-carboximidamide INT-68 as a white solid which was used directly in the next step without purification. LCMS-ESI (m/z) calculated for C9H8N2O2: 176.2; found 177.1 [M+H]+, tR=0.83 min.

1. customPrepared
2. concentrationthen concentrated
3. dissolutionre-dissolved in DCM
4. washwashed with NaHCO3
5. dry with materialThe combined organic layers were dried over Na2SO4
6. concentrationconcentrated