Triethylamine → HCID 67916021, compound

Participants

Reaction Steps

N,N'-Carbonyldiimidazole (1.13 g) is added to a solution of 2-(2,6-dichlorophenyl)acetic acid (1.43 g) in dry dichloromethane (30 cc), cooled to +5° C. The mixture is stirred for 30 minutes at +5° C. and a solution of (3aRS,7aRS)-7,7-diphenyl-4-perhydroisoindolone hydrochloride (2.3 g) and triethylamine (0.98 cc) in dichloromethane (40 cc) is then added. The reaction mixture is stirred at 20° C. for 20 hours, then washed with distilled water (3×50 cc), dried over magnesium sulphate and filtered and the filtrate is concentrated to dryness under reduced pressure (2.7 kPa). The residue is chromatographed on a silica gel column (0.2-0.063 mm, diameter 1.8 cm, height 23.5 cm), eluting with dichloromethane and collecting 15 cc fractions. Fractions 1 and 2 are combined and concentrated to dryness under reduced pressure (2.7 kPa). The residue is crystallized from a mixture of acetonitrile (5 cc) and isopropyl ether (4 cc). The crystals obtained are drained, washed with isopropyl ether (10 cc) and dried. (3aRS,7aRS)-2-[(2,6-dichlorophenyl)acetyl]-7,7-diphenyl-4-perhydroisoindolone (0.62 g) melting at 201° C. is obtained.

Provenance & Evidence