Acetic Anhydride → HCID 23046874, compound

Participants

Reaction Conditions

Reaction Steps

The same reactor as used in the second half of Example 1 was charged with 11.4 parts of the resulting 2-methyl-7-propionyloxynaphthalene crystals, 90 parts of acetic acid, 10 parts of acetic anhydride, 0.249 part (Co=5990 we. ppm) of cobalt acetate tetrahydrate, 0.245 part (Mn=550 wt. ppm) of manganese acetate tetrahydrate, and 0.250 part (Br=2040 wt. ppm) of ammonium bromide, and pressurized to 8 kg/cm2 -G. The mixture was heated to 180° C., and air was introduced into the reactor at a rate of 10 Nl/hr. The reaction was terminated when the absorption of oxygen ceased. The reaction time was 2 hours. The reactor was cooled, and the contents were withdrawn and analyzed. The conversion of 2-methyl-7-propionyloxynaphthalene was 100 mole %, and the yield of 7-propionyloxy-2-naphthoic acid was 51.0 mole % (selectivity 51 mole %). At this time, 19 mole % of 7-propionyloxy-2-naphthaldehyde was formed.

Provenance & Evidence