HCID 137329061, compound → HCID 178440052, compound

Participants

Reaction Steps

1.24 g (12.4 mmol) of neutral alumina and 2.7 g (12.4 mmol) of pyridinium chlorochromate are added to a solution of 2.7 g (6.2 mmol) of the compound from Example 6 in 50 ml of methylene chloride and the mixture is stirred for 1 h at room temperature. It is filtered over kieselguhr and washed with 200 ml of methylene chloride. The methylene chloride phase is concentrated in vacuo and the residue is chromatographed on a column (100 g of silica gel, 70-230 mesh, φ3.5 cm, using ethyl acetate/petroleum ether 1:9).

Provenance & Evidence