HRID58368
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
Amine 25 (0.550 g, 1.17 mmol) was dissolved in anhydrous DMF (20 mL). Benzyl chloroformate (0.250 mL, 1.76 mmol) and DIPEA (0.815 mL, 4.68 mmol) were added and the reaction mixture was stirred at rt for 18 h before being partitioned between EtOAc and 1M hydrochloric acid. The aqueous phase was extracted twice more with EtOAc and the combined organic extracts were dried (MgSO4), filtered and concentrated in vacuo. The crude material was purified by flash chromatography on silica using a gradient of EtOAc/DCM to yield an off-white solid, 0.460 g, 69%. Rf=0.32 (30% EtOAc/DCM). m.p. 91-93° C.
WORKUP
后处理
- custombefore being partitioned between EtOAc and 1M hydrochloric acid
- extractionThe aqueous phase was extracted twice more with EtOAc
- dry with materialthe combined organic extracts were dried (MgSO4)
- filtrationfiltered
- concentrationconcentrated in vacuo
- customThe crude material was purified by flash chromatography on silica using a gradient of EtOAc/DCM
- customto yield an off-white solid, 0.460 g, 69%