HCID 70123891, compound → HCID 9844127, compound

Participants

Reaction Steps

N,N-Dipropionyl-2-methyl-9-(2,4,6-trimethylphenyl)-5H-pyrido[2,3-b] indol-4-amine 1c (312 mg) is refluxed in 8 mL THF with borane-methylsulfide complex (10 M, 1.2 mL) for 10 hours. After cooling the solution, it is carefully quenched with 5 mL of methanol. The resulting solution is refluxed for another 2 hours and then concentrated. The dialkylamine product is purified on silica gel using 20% ethyl acetate in hexanes as eluant to afford N,N-Dipropyl-2-methyl-6,7,8,9-tetrahydro-9-(2,4,6-trimethylphenyl)-5H-pyrido[2,3-b]indol-4-amine (Compound 1) as a white solid, m.p.: 117-118° C.

Provenance & Evidence