1: 2-(2-(2-(undec-10-enyloxy)ethoxy)ethoxy)ethanol With sodium hydride in N,N-dimethyl-formamide T=0°C; 0.166667 h; 2: bromoacetic acid tert-butyl ester in N,N-dimethyl-formamide T=20°C; 12 h;

1.1: NaH / tetrahydrofuran / 2.5 h / 0 - 80 °C 1.2: 80 percent / tetrahydrofuran / 12 h / 80 °C 2.1: NaH / dimethylformamide / 0.17 h / 0 °C 2.2: 70 percent / dimethylformamide / 12 h / 20 °C View Scheme

1.1: NaH / tetrahydrofuran / 2.5 h / 0 - 80 °C 1.2: 80 percent / tetrahydrofuran / 12 h / 80 °C 2.1: NaH / dimethylformamide / 0.17 h / 0 °C 2.2: 70 percent / dimethylformamide / 12 h / 20 °C View Scheme