1: 3,3-dimethylbut-1-yne With n-hexyl lithium in tetrahydrofuran; hexane T=0°C; Inert atmosphere; 2: formic acid ethyl ester in tetrahydrofuran; hexane T=0 - 20°C; Inert atmosphere; 3: With water; ammonium chloride in tetrahydrofuran; hexane Inert atmosphere;

1: 3,3-dimethylbut-1-yne With n-butyllithium in tetrahydrofuran; hexane T=0°C; 0.25 h; 2: formic acid methyl ester in tetrahydrofuran; hexane T=0°C; Heating; 3: With water; ammonium chloride in tetrahydrofuran; hexane

di-tert-butyldiphenyl; lithium 1) THF, 4 - 5 deg C, 6 h; 2) 20 deg C, THF; Yield given. Multistep reaction;

di-tert-butyldiphenyl; lithium 1) THF, 4 - 5 deg C, 6 h; 2) 20 deg C, THF; Yield given. Multistep reaction;

Edukt 2 hat nur Formel;

pyridinium chlorochromate in dichloromethane T=20°C; 24 h; Molecular sieveInert atmosphere;