Acetophenone → Styrylphosphonic acid

Participants

Reaction Steps

In this Example, an acid catalyst (ZSM-5-40 zeolite) was used for both the reaction of phosphorous acid (24.6 gm) with 36 gm of acetophenone (at 75° C.) and the subsequent reaction (at 80° C.) to crack the acyl derivative to form SPA. The amount of catalyst used in the first reaction was 12 gm. It was determined that the product contained 77 wt % styrene phosphonic acid (SPA), 17 wt % unreacted phosphorous acid, and 6 wt % Diels-Alder dimer phosphorus compound. The yield of SPA in this reaction was therefore 65% of theory.

Provenance & Evidence