Triethylamine → HCID 57889742, compound

Participants

Reaction Steps

A mixture of (R)-2-amino-3-methylbutanoic acid (2.01 g, 17.16 mmol) and 2,5-dioxopyrrolidin-1-yl 2-(trimethylsilyl)ethyl carbonate (4.89 g, 18.87 mmol) in 1:1 dioxane/water (40 mL) was treated with triethylamine (3.59 mL, 25.7 mmol), and the mixture was stirred for two days at room temperature. The mixture was acidified with saturated sodium hydrogen sulfate and extracted 3× with ethyl acetate. The combined organic phases were washed with saturated sodium hydrogen sulfate, water, and brine, then dried over sodium sulfate and concentrated in-vacuo to yield the title compound (4.17 g, 15.96 mmol, 93% yield) as an amber oil.

Provenance & Evidence