Selenium Dioxide → HCID 20077497, compound

Participants

Reaction Steps

1.65 g (7.5 mmol) of the compound from Example VIII are stirred for 6 h at 200° C. with 1.85 g of selenium dioxide in 17 g of naphthalene. After chromatography on silica gel, 0.75 g (43%) of the title compound is obtained. In some batches, it is necessary to stop the reaction before complete conversion of the starting material, since byproducts increasingly occur. M.p.: 156°-157° C.

Provenance & Evidence