反应详情

A solution of Boc-N(Me)Ala-OH (155 mg, 0.76 mmol) in NMP (5 mL) was cooled to 0° C. and treated with HATU (290 mg, 0.76 mmol) and DIPEA (0.15 mL, 0.87 mmol) followed in 15 min by the addition of 40 (366 mg, 0.73 mmol). The reaction mixture was allowed to warm to ambient temperature. After 18 h, the solution was diluted with Et2O, washed with H2O, 1M HCl, H2O, saturated aqueous NaHCO3, brine, dried over anhydrous Na2SO4, filtered and concentrated to afford 41 (443 mg) as a white foam that was used without further purification. Mass spectrum, m/z [690.8] (M+H)+.

1. washwashed with H2O, 1M HCl, H2O, saturated aqueous NaHCO3, brine
2. dry with materialdried over anhydrous Na2SO4
3. filtrationfiltered
4. concentrationconcentrated