Chlorotrimethylsilane → HCID 57030967, compound

Participants

Reaction Steps

To a solution of (2S,4S)-2-aminomethyl-1-allyloxycarbonyl-4-mercaptopyrrolidine (2.80 g: ca. 13.14 mmole) in dichloromethane (66 ml) at -50° C., triethylamine (4.02 ml: 28.91 mmole) and trimethylchlorosilane (3.76 ml: 28.91 mmole) are added dropwise over 15 minutes. The mixture is stirred at the same temperature for 20 minutes. To the reaction mixture triethylamine (0.92 ml: 6.57 mmole) and a solution of sulfamoyl chloride (19.37 mmole) in dichloromethane (6.8 ml) are added dropwise over 20 minutes at -70° C., and the mixture is stirred for 30 minutes. To the reaction mixture triethylamine (3.84 ml: 27.59 mmole) is again added over 1 hour at -50° C. The reaction mixture is kept at the same temperature overnight and concentrated in vacuo. The residual oil is purified by silica gel chromatography (ethyl acetate) to give (2S,4S)-1-allyloxycarbonyl-2-(sulfamoylamino)methyl-4-mercaptopyrrolidine (2.64 g). Yield: 68%. White powder.

Provenance & Evidence