Methanol → HCID 15390840, compound

Participants

Reaction Steps

4.5 g of potassium hydroxide, then 10 ml of triethylamine were added to a suspension of 10 g of 9,10-dimethoxy 8-(((4-methylphenyl)sulfonyl)oxy) 2,3,5,6-tetrahydro-benz[e]-azulen-4(1H)-one of Stage B of Example 3 and 100 ml of methanol. The reaction medium was heated for one hour at reflux, acidified by the addition of 20 ml of acetic acid and then 20 ml of water were added. Extraction was carried out with dichloromethane and the extracts were washed with water. The solvent was evaporated at 40° C. under reduced pressure to obtain 5.7 g of the expected product which was used as is for the following stage.

Provenance & Evidence