Abstract
4-Methylene-1,3-oxazolidin-2-ones were prepared via the cycloadditon reaction of propargylic alcohols with primary amines and CO2 under atmospheric pressure at 60 °C in the absence of any additional solvent. This methodology affords an ecofriendly, mild, and easy approach to chemical fixation of CO2.
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Notes
a Condition: 2-methylbut-3-yn-2-ol (2 mmol), n-butylamine (2–6 mmol), catalyst (0.1 mmol).
b Isolated yields based on 2-methylbut-3-yn-2-ol.
c 2-Methylbut-3-yn-2-ol remained unchanged.
a Reagents and conditions: alcohol 1 (2 mmol), amine 2 (4 mmol), CuCl (0.1 mmol), 60 °C, 24 h.
b Isolated yield based on alcohol.
c No desired product detected.
d Alcohol remained unchanged.