gamma-Hexalactone → HEXANAMIDE, 4-HYDROXY-N-[(4-METHOXYPHENYL)METHYL]-

Participants

Reaction Conditions

Reaction Steps

Gamma-caprolactone (28.745 Kg, 251.8 moles) and 4-methoxybenzylamine (38.0 Kg, 277 moles) were placed in a 100 gallon glass lined tank. The solution was heated to 80-85° C. and held at that temperature for 16 hours. TLC on silica gel plates showed the reaction was complete. The TLC system comprised: ethyl acetate with detection at 254 nm. Ethyl acetate (18 gal, 68 L) was slowly charged to the reaction pot after cooling to 60° C. Hexanes (a total of 18 gal, 68 L) were added until a haze was achieved. After ½ hour, to allow crystallization to start, the remainder of the hexanes was added. The slurry was cooled to 25° C. and granulated for 3 hours. The solid was collected by filtration and washed with a 1:1 mixture of ethyl acetate and hexanes. The wet cake was vacuum dried with no additional heat to produce 46.05 Kg (72.8%) of the desired amide; mp 81-82° C.

Provenance & Evidence