Triethylamine → HCID 59201679, compound

Participants

Reaction Conditions

Reaction Steps

A solution of (S)-tert-butyl 1-hydroxy-5-methoxy-4,4-dimethylpentan-2-ylcarbamate (7.8 g, 30 mmol) in methylene chloride (150 mL) and Et3N (10.4 mL, 75 mmol) was cooled to −20° C., MsCl (6.9 g, 60 mmol) was added with fast dropwise addition maintaining the internal temperature at −20° C. The reaction mixture was stirred for 1 h in rt. The reaction was quenched with water (100 mL), extracted with CH2Cl2 (3×100 mL), washed with water and brine, dried over Na2SO4 and concentrated in vacuo to give (S)-2-(tert-butoxycarbonylamino)-5-methoxy-4,4-dimethylpentyl methanesulfonate (10.1 g, 100%) as an oil that was used in the next step without further purification.

Provenance & Evidence