dipyridinium dichromate in N,N-dimethyl-formamide

1: hydrogen / 760.05 Torr 2: toluene-4-sulfonic acid / methanol 3: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme

1: toluene-4-sulfonic acid / methanol 2: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme

1.1: sodium iodide / acetone 2.1: N,N,N',N',N'',N''-hexamethylphosphoric triamide; n-butyllithium / tetrahydrofuran / -78 °C 2.2: -78 °C / Heating 3.1: hydrogen / 760.05 Torr 4.1: toluene-4-sulfonic acid / methanol 5.1: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme

1.1: N,N,N',N',N'',N''-hexamethylphosphoric triamide; n-butyllithium / tetrahydrofuran / -78 °C 1.2: -78 °C / Heating 2.1: hydrogen / 760.05 Torr 3.1: toluene-4-sulfonic acid / methanol 4.1: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme

1.1: toluene-4-sulfonic acid / dichloromethane 2.1: N,N,N',N',N'',N''-hexamethylphosphoric triamide; n-butyllithium / tetrahydrofuran / -78 °C 2.2: -78 °C / Heating 3.1: hydrogen / 760.05 Torr 4.1: toluene-4-sulfonic acid / methanol 5.1: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme

1.1: pyridine / dichloromethane 2.1: sodium iodide / acetone 3.1: N,N,N',N',N'',N''-hexamethylphosphoric triamide; n-butyllithium / tetrahydrofuran / -78 °C 3.2: -78 °C / Heating 4.1: hydrogen / 760.05 Torr 5.1: toluene-4-sulfonic acid / methanol 6.1: dipyridinium dichromate / N,N-dimethyl-formamide View Scheme