p-Toluenesulfonic acid → HCID 86744918, compound

Participants

Reaction Steps

To a mixture of 26.4 parts of 5-nonylsalicylic acid, 5.9 parts of m-xylene, 3.4 parts of sym-trioxane and 15 parts of acetic acid was added 4.0 parts of p-toluenesulfonic acid (catalyst). After being heated under reflux for 5 hours, the reaction mixture was washed with water, and unreacted m-xylene and water were removed by vacuum distillation to give 38 parts of 5-nonylsalicylic acid-m-xylene-formaldehyde co-condensation product. To 10 parts of the co-condensation product was added gradually a mixture of 0.9 parts of zinc oxide and 0.5 parts of ammonium hydrogencarbonate at a temperature of 150° C. After the completion of the addition, the reaction was allowed to proceed for an additional hour at 150° C. to give 10.8 parts of zinc salt of 5-nonylsalicylic acid-m-xylene-formaldehyde co-condensation product.

Provenance & Evidence