Triethylamine → Pentadeca-12-ene-1-yl methacrylate

Participants

Reaction Steps

Pentadeca-12-ene-1-ol (22.6 grams) is placed in a three-neck flask under a blanket of nitrogen. The entire reaction contents are cooled in an ice bath. Methacryloyl chloride (10.5 grams) dissolved in about 50 mL of methylene chloride is added slowly to the cooled pentadeca-12-ene-1-ol with vigorous stirring in about 2 hours. Triethylarnine (11.5 g) dissolved in 25 mL of methylene chloride is subsequently added in about an hour. After addition of triethylamine, the solution is allowed to warm to ambient temperature and is stirred for another 4 hours in order to complete the reaction. The precipitated triethylammonium chloride is removed by filtration, and the filtrate is washed with brine solution (saturated NaCl) followed by washings with dil. NaOH and dil. HCl. The organic layer is dried with anhydrous magnesium sulfate and the solvent is removed in vacuo to yield pentadeca-12-ene-1-yl methacrylate in good yields. Pentadeca-12-ene-1-yl methacrylate is stabilized from polymerization by addition of approximately 10 ppm hydroquinone. The structure of the product is verified by 1H and 13C NMR spectroscopy.

Provenance & Evidence