11-Bromoundecyl methacrylate (0.32 g, 1.0 mmol), N,N-dimethylethanolamine (1.0 ml, 10 mmol), and 4-methoxyphenol (trace) were dissolved in 9.0-ml THF under nitrogen atmosphere. After reaction at 60°C for 15 hours, the solvent was evaporated off, and the obtained crude product was washed with diethyl ether to remove the impurities. MA-11-OH was obtained as a white solid with a yield of 88%.

1H NMR (500 MHz, CDCl3): δ (ppm) 6.09 (s, 1H, CH2═C), 5.55 (s, 1H, CH2═C), 4.16 (t, 2H, ─CH2─OH), 4.14 (t, 2H, ─CH2─OOC), 3.75 (t, 2H, N─CH2─CH2OH), 3.54 (t, 2H, N─CH2─), 3.38 (s, 6H, N─CH3), 1.94 (s, 3H, CH3─C═C), 1.76 (m, 2H, ─CH2─CH2─OOC), 1.67 (m, 2H, ─CH2─CH2─N), and 1.24 to 1.44 [m, 14H, ─(CH2)7─]. MALDI-TOF (positive ion): Calcd m/z for C19H38O3N1+: 328.28; found, 328.29.

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