反应详情

A solution of 1.01 g (4.78 mmol) 3-cyano-5-(2-azidoethyl)indole (reference example 3) and 1.38 g (5.26 mmol) triphenylphosphine in 20 mL THF is stirred overnight to give a white precipitate. Another 20 mL THF and 1 mL distilled water is added. After stirring overnight the resulting solution is concentrated, and the residue chromatographed (10:1 CH2Cl2:7N NH3 in MeOH) to provide 0.870 g of the product as a white solid in 98% yield. 1H NMR (CD3OD): δ 2.87-2.97 (4H, m), 7.17 (1H, d, J=8 Hz), 7.45 (1H, d, J=8 Hz), 7.50 (1H, s), 7.90 (1H, s). MS (EI) m/z 185 M+, 169 (M−NH3)+, 155 (M−CH2NH2)+.

1. customto give a white precipitate
2. distillationAnother 20 mL THF and 1 mL distilled water
3. additionis added
4. concentrationis concentrated
5. customthe residue chromatographed (10:1 CH2Cl2:7N NH3 in MeOH)