反应详情

To a solution of the above residue from Step 1 in DCM (2 mL) was added TFA (2.0 mL, 26 mmol) and the resultant mixture was stirred for 2 h. The mixture was concentrated in vacuo, resuspended in MeOH (1 mL) and to this was added ethylenediamine (13 μl, 0.187 mmol) and sodium hydroxide (10 M aq) (0.065 mL, 0.653 mmol). After 18 h, the reaction was transferred to vial with an additional 1 mL of dimethylsulfoxide and this solution was purified by mass triggered reverse phase HLPC. The fractions containing product 5-2 were basified with NaHCO3, dried over MgSO4, filtered and concentrated.

1. concentrationThe mixture was concentrated in vacuo
2. customthis solution was purified by mass triggered reverse phase HLPC
3. additionThe fractions containing product 5-2
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated