反应详情

Isobutyl chloroformate (152 μL, 1.16 mmol) was added to a stirred solution of 1-(tert-butoxycarbonyl)pyrrolidine-3-carboxylic acid (237 mg, 1.10 mmol) and 4-methylmorpholine (182 μL, 1.65 mmol) in THF (5.50 mL) at −78° C. After 15 min, added acetic hydrazide (2.0 mg, 1.10 mmol), and the resulting mixture was warmed slowly to rt. After 1 h, the reaction mixture was quenched with 0.5 M HCl and extracted with EtOAc. The combined organics were dried (sodium sulfate) and concentrated in vacuo to afford the title compound i-8a. m/z (ES) 272 (MH)+.

1. waitAfter 1 h
2. customthe reaction mixture was quenched with 0.5 M HCl
3. extractionextracted with EtOAc
4. dry with materialThe combined organics were dried (sodium sulfate)
5. concentrationconcentrated in vacuo