Tetrahydrofuran → HCID 13091049, compound

Participants

Reaction Conditions

Reaction Steps

THF (700 ml) and BOC-Ser(Bzl)-OH (23.6 g, 0.8 M) and HOBT (108 g, 0.8 M) were added to H-Ser(Bzl)-Ome.HCl (196.57 g, 0.8 M); and DMF (200 ml) was added to prepare a solution. WSCI (146 ml, 0.8 M) was added dropwise thereto at 0° C. and the mixture was stirred at 0° C. for one hour and at room temperature overnight. The reaction mixture was concentrated in vacuo, and ethyl acetate (1 l.) was added to the residue, which was then washed with 5% sodium bicarbonate solution, 1 N HCl and water, each three times, in that order. Hexane was added to the oily product, which was then crystallized by adding crystalline seed. The material was then recrystallized from ether-hexane to obtain the substance [28] (340.4 g, yield: 87.5%).

Provenance & Evidence