1: With fluorotriethoxysilane; CuF(PPh3)3 in tetrahydrofuran T=20°C; 1 h; 2: With triethylamine tris(hydrogen fluoride) in tetrahydrofuran

toluene; zinc; benzene Reagens 4: Jod;

benzene+toluene; iodine; zinc

titanium(IV) tetrakis(diethylamide) multistep reaction; selectivity of Ti(NEt2)4 as protective agent for carbonyl compounds (preferential protection of the aldehyde); competition between aldehyd and ketone;