Methanol → Methyl 11-bromoundecanoate

Participants

Reaction Steps

A mixture of 13.25 g of 11-bromoundecanoic acid, 100 mL of methanol and 10 drops of hydrochloric acid was stirred for 3 days in a closed flask. The solvent was removed in vacuo and the residual oil was redissolved in ether (100 mL). This solution was subsequently washed twice with 25 mL of a saturated NaHCO3 solution, once with water (25 mL) and once with brine (25 mL). Drying over sodium sulfate and removal of the solvents in vacuo gave 13.32 g of the product as a yellowish oil, which was sufficiently pure to use in the next step. 1H NMR (200 MHz, CDCl3): δ 3.65 (s, 3H); 3.39 (t, 2H); 2.28 (t, 2H); 1.90-1.78 (m, 2H); 1.70-1.50 (m, 2H); 1.50-1.21 (m, 12H) ppm. IR (neat, cm−1): 2928 (m); 2855 (m); 1741 (s).

Provenance & Evidence