SYNTHESIS OF 2-OXOUNDEC-3-ENE
- Potassium carbonate (8.3g, 60mmol) in water (10 ml) is
added to a vigorously stirred mixture of octanal (3.84g, 30mmol) and diethyl
2-oxopropane-phosphonate (7.0g, 36mmol) at room temperature.
- The mixture is
stirred for 18 hours at room temperature, water (15 ml) is then added, and the
organic phase is extracted with hexane (3 x 25 ml).
- The extract is dried with
magnesium sulphate (1g), evaporated, and the residue distilled to give
2-oxoundec-3-ene; 4,4g (87%), b.p. 80-83 °C/0.7 mmHg.
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