HCID 13689007, compound → HCID 13689009, compound

Participants

Reaction Steps

A solution of 8.9 g (0.026 mole) of N,N-diethyl-5-nitro-2H-[1]benzopyrano[4,3,2-cd]indazole-2-ethanamine in 100 ml of tetrahydrofuran was hydrogenated over 1 g of 10% palladium on carbon at ambient temperature and a hydrogen pressure of 46.3-52.3 psi. The mixture was filtered and the solvent removed in vacuo. The oily residue was triturated with petroleum ether and recrystallized from n-hexane to give the product, mp 78°-80° C.

Provenance & Evidence