Acetic Acid → 5-Nitro-2-(phenylmethyl)aminoindane

Participants

Reaction Conditions

Reaction Steps

5-Nitro-2-indanone (1.48 g, 8.36 mmol), benzylamine (4.40 ml, 41.8 mmol), acetic acid (15.0 ml), 4 Å molecular sieves (20 ml), THF (15 ml), and MeOH (15 ml) were introduced into a flask and cooled to 0° C. Sodium cyanoborohydride (1.05 g, 16.7 mmol) was then added portionwise over a 5-minute period. The mixture was stirred for 14 hr, filtered through celite, and concentrated to a syrup. The mixture was made basic with 2N NaOH and extracted with ether (3×50 ml). The combined exacts were washed with water, dried over magnesium sulfate, filtered, concentrated and chromatographed over silica gel (3% methanol/methylene chloride) to yield 5-nitro-2-(phenylmethyl)aminoindane: (1.18 g, 53%); M.S. (M+H)+ =269.

Provenance & Evidence