HCID 86738405, compound → HCID 13770490, compound

Participants

Reaction Steps

A mixture of 2.5 g (9.8 mmole) of the product of Step A in 40 ml of acetic acid anhydride was refluxed for 3 hours and was then poured into a mixture of water-sodium carbonate-ethyl acetate. The decanted organic phase was washed once with water, dried, filtered and evaporated to dryness. The residue was triturated with ether to obtain 1.8 g of 4,5-dihydro-5-ethyl-4-oxopyrrolo-[1,2-a]-quinoxaline-2-carbonitrile in the form of buff needles melting at 237°-239° C.

Provenance & Evidence