89 g (1-benzyl-5-chloro-2,3,6,7-tetrahydro-1H-azepin-4-yl)-phenyl-methanol in 800 mL dichlormethane was dropped to 115.4 g pyridiniumchlorchromate in 600 mL dichlormethane. The reaction was stirred 2.5 days at RT. Potassium carbonate solution was added to the reaction, the mixture was stirred 2 h at RT and filtered over celite. The layers were separated and the organic layer was washed with water. The solvent was removed and the residue was purified by chromatography to yield 64.6 g of the desired compound. Rf: 0.5 (toluol/EE: 8.5/1.5)
