N-ethyl-N,N-diisopropylamine 1.) THF, ethanol, -75 deg C up to -20 deg C, 5 h; 2.) -75 deg C up to -20 deg C, 30 min; Yield given. Multistep reaction;

iodine in tetrahydrofuran 1.) 15 min, -15 deg C, 2.) 30 min, room temp.;

in ethanol 1 h; -40 deg C up to room temperature;