p-Toluenesulfonic acid → HCID 86740392, compound

Participants

Reaction Steps

Into a flask equipped with a magnetic stirrer, thermometer, and addition funnel were placed 157.0 parts of dimethylaminoethylmethacrylate and 418.0 parts of methanol. The addition funnel was charged with 172.0 parts of anhydrous para-toluenesulfonic acid and 350.0 parts of methanol and this mixture was added to the initially charged ingredients over a period of fifteen minutes, maintaining the temperature below 40° C. The reaction mixture was maintained at ambient temperature for a thirty minute period and adjusted to pH 7.0 by the addition of 10.2 additional parts of dimethylaminoethylmethacrylate. The resultant product mixture was filtered to yield the dimethylaminoethylmethacrylate para-toluenesulfonate. The aforesaid latent acid catalyst had a solids content of 30 percent in methanol.

Provenance & Evidence