Borane → HCID 19003077, compound

Participants

Reaction Conditions

Reaction Steps

3-Cyclopropylimino-4-methyl-1,2,3,4-tetrahydrocyclopent[b]indol-7-ol (8.7 g) was placed in a 3-neck flask and cooled to 0° C. in an ice-water bath. A 1M solution of borane in THF (540 ml) was added in a dropwise manner. The mixture was stirred for 1 hour while it was slowly warmed to room temperature. The mixture was cooled back down to 0° C. and trifluoroacetic acid (119 ml) was added in a dropwise manner. The solution was stirred for 15 minutes and THF was removed in vacuo. The mixture was neutralized with 10% NaOH solution, extracted with methylene chloride (4×500 ml), dried (Na2SO4) and concentrated to give 3-(N-cyclopropyl)amino-1,2,3,3a,4,8b-hexahydro-4-methylcyclopent[b]indol-7-ol (8.8 g).

Provenance & Evidence