Hydroxyamine hydrochloride → HCID 136403367, compound

Participants

Reaction Steps

A stirred solution of 1,2-cyclopentadione mono-4-methoxyphenylhydrazone (6.0 g) in 100 ml of 10% aqueous H2SO4 was heated on a steam bath for 4 hours and thereafter allowed to cool to room temperature and filtered to give 1,4-dihydro 7-methoxy-cyclopent[b]indol-3(2H)-one as a solid. To the indole (2.6 g) in 25 ml of 95% EtOH was added hydroxylamine hydrochloride (1.7 g) in 15 ml water followed by sodium acetate (2.1 g) in 15 ml water. The mixture was heated at reflux for 2.5 hours and allowed to stand overnight. The EtOH was removed in vacuo and the solid material which formed was collected and purified by flash chromatography to give 0.8 g of a mixture of oxime isomers.

Provenance & Evidence