反应详情

This compound was prepared according to a procedure similar to that described in Procedure A. I In a solution of 3-Oxo-8-aza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (2.25 g, 10 mmol) in tetrahydrofuran (20 mL) was dropped in ethynyl magnesium bromide (60 mL, 30 mmol) at −0° C. Then the solution was stirred overnight at room temperature. Then the reaction mixture was quenched with saturated NH4Cl and extracted with dichloromethane, dried with anhydrous sodium sulfate to afford 3-Ethynyl-3-hydroxy-8-aza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (0.8 g, 32%). 1H NMR: (DMSO-d6, 400 MHz) δ 5.43 (s, 1H), 3.98 (s, 2H), 3.24 (s, 1H), 2.08-1.91 (m, 8H), 1.37 (s, 9H).

1. customThis compound was prepared
2. customThen the reaction mixture was quenched with saturated NH4Cl
3. extractionextracted with dichloromethane
4. dry with materialdried with anhydrous sodium sulfate