formic acid; [Ru(II)(2,2’-bipyridine)3]Cl2; diethyl-1,4-dihydro-2,6-dimethyl-3,5-pyridine dicarboxylate; N-ethyl-N,N-diisopropylamine in dichloromethane T=25°C; Irradiation; chemoselective reaction;

1: benzoic acid With 1-methyl-piperidine; isopropyloxycarbonylchloride in tetrahydrofuran; toluene T=0°C; 0.333333 h; 2: With LiAlHSeH in tetrahydrofuran; toluene T=0 - 5°C; 0.5 h; 3: 4-azidobenzyl alcohol in tetrahydrofuran; toluene T=55°C;

piperidine; N-ethyl-N,N-diisopropylamine in acetonitrile T=55°C; 12 h;

in dimethyl sulfoxide; ethyl acetate T=5 - 20°C; 2 h;

Dess-Martin periodane in dichloromethane T=20°C; 2 h;

phosphorus tribromide in chloroform T=20°C; Inert atmosphere;