1: 1-methyl-2-phenyl-[1,3,2]diazaborinane With magnesium bis(2,2,6,6-tetramethylpiperamide) in tetrahydro-4H-pyran; hexane T=0°C; 1 h; RefluxInert atmosphere; 2: With iodine in tetrahydro-4H-pyran; hexane T=0 - 20°C; Inert atmosphere; 3: 2,3-dimethylbutane-2,3-diol Further stages;

1: 1-methyl-2-phenyl-[1,3,2]diazaborinane With magnesium bis(2,2,6,6-tetramethylpiperamide) in tetrahydrofuran T=0°C; 2.53333 h; RefluxInert atmosphere; 2: dimethyl sulfate in tetrahydrofuran T=0 - 20°C; Inert atmosphere; 3: 2,3-dimethylbutane-2,3-diol Further stages;

1: 1-methyl-2-phenyl-[1,3,2]diazaborinane With magnesium bis(2,2,6,6-tetramethylpiperamide) in tetrahydro-4H-pyran; hexane T=0°C; 1 h; RefluxInert atmosphere; 2: With iodine in tetrahydro-4H-pyran; hexane T=0 - 20°C; Inert atmosphere; 3: 2,3-dimethylbutane-2,3-diol Further stages;

1: 1-methyl-2-phenyl-[1,3,2]diazaborinane With magnesium bis(2,2,6,6-tetramethylpiperamide) in tetrahydrofuran T=0°C; 2.53333 h; RefluxInert atmosphere; 2: dimethyl sulfate in tetrahydrofuran T=0 - 20°C; Inert atmosphere; 3: 2,3-dimethylbutane-2,3-diol Further stages;

in toluene 4 h; RefluxInert atmosphere;

in toluene Inert atmosphereReflux;

transamination, boiling the educts in an inert atmosphere and in an inert solvent, distn. of dimethylamine during the reaction; distn.;