HCID 20770232, compound → HCID 20770233, compound

Participants

Reaction Steps

240 mg of the product of Stage A dissolved in 2 ml of methylene chloride is added to 7.5 ml of a mixture of methylene chloride/trifluoroacetic acid (9/1) under a nitrogen atmosphere. The solution obtained is agitated for 1 hour followed by evaporating and drying. A product is obtained which is taken up in ether then in pentane followed by evaporation again. The product obtained is chromatographed and 47 mg of sought product is obtained.

Provenance & Evidence