4,4-dimethyl-1-phenylpentane-1,3-dione

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The desired product is prepared as described in Example 1 using 2-hydroxyacetophenone (19.0 g, 140 mmol) and trimethylacetic hydrazide (10 g, 96 mmol). Yield: 5.0 g, 84%. m.p. 43°-45° C. 1H NMR (CDCl3), δ=1.25 (s, 9H, 3×CH3); 2.58 (s, 3H, CH3); 7.21 (d, 1H, ArH); 7.45-7.49 (m, 1H, ArH); 7.55-7.59 (m, 1H, ArH); 7.89 (d, 1H, ArH).