1: N-(2-methoxyphenyl)-1,1-dimethylethyl ester carbamic acid With tert.-butyl lithium in diethyl ether; pentane T=-20°C; 3 h; 2: ethyl iodide in diethyl ether; pentane T=-78 - 20°C; Further stages.;

1.1: 92 percent / tetrahydrofuran / 30 h / Heating 2.1: t-BuLi / diethyl ether; pentane / 3 h / -20 °C 2.2: 47 percent / diethyl ether; pentane / -78 - 20 °C View Scheme

1.1: 92 percent / tetrahydrofuran / 30 h / Heating 2.1: t-BuLi / diethyl ether; pentane / 3 h / -20 °C 2.2: 47 percent / diethyl ether; pentane / -78 - 20 °C View Scheme

in dichloromethane T=20°C; 0.333333 h;