Sodium Hydroxide → HCID 86615549, compound

Participants

Reaction Steps

A solution of the product of Example 13E (62.4 mg, 0.1066 mmol) in concentrated hydrochloric acid (2 mL) cooled to 0°-5° was treated dropwise with a solution of sodium nitrite (14.7 mg, 0.2131 mmol) in water (1 mL). After stirring at 0° for 1 hour, a solution of sodium azide (13.8 mg, 0.2131 mmol) and sodium acetate (72.6 mg, 0.885 mmol) in water (2 mL) was added dropwise at 0°, and the reaction stirred for 1 hour at 0°. The reaction was then diluted with water (25 mL) and ethyl acetate (50 mL), the aqueous pH was adjusted to 7-8 with 6N aqueous sodium hydroxide, the layers were separated, and the organic phase washed with brine (25 mL). The organic was dried over anhydrous sodium sulfate, filtered, and concentrated by rotary evaporation under vacuum. The resultant residue was purified by silica gel flash chromatography using 30% ethyl acetate/methylene chloride as eluent to afford the title compound as a yellow solid (21 mg, 32%). 1H NMR (300 MHz, DMSO-D6) δ ppm: 1.34 (d, J=6.62 Hz, 6 H) 3.11-3.32 (m, 1 H) 7.10 (d, J=8.46 Hz, 2 H) 7.21 (d, J=8.46 Hz, 1 H) 7.41 (d, J=8.46 Hz, 2 H) 7.53 (d, J=8.82 Hz, 2 H) 7.63 (d, J=8.46 Hz, 1 H) 7.74 (d, J=9.19 Hz, 2 H) 7.81-7.91 (m, 1 H) 8.03 (d, J=1.10 Hz, 1 H) 8.58 (s, 1 H) 8.82 (d, J=8.46 Hz, 1 H) 10.23 (s, 1 H) 10.39 (s, 1 H); MS (ESI+) m/z 611/613 (M+H)+.

Provenance & Evidence