Acetic Acid → 2-Propenoic acid, 3-phenyl-, methyl ester

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Into the same autoclave as that used in Example 4 were charged 2% Pd/A.C. in an amount of 0.5 mmol as Pd, 20 mmol of cupric acetate, 20 mmol of barium chloride, 160 mmol of acetic acid, 70 ml of styrene and 30 ml of methanol, then, a mixed gas of nitrogen/oxygen/carbon monoxide (86.0/5.5/8.5 in volume ratio) was introduced to make the pressure inside the reaction system 20.0 kg/cm2G, and while maintaining this pressure and passing the mixed gas at a gas flow rate at the reactor outlet of 76.6 Nl/hr, the reaction was effected for 1.5 hours while maintaining the reaction temperature at 120° C. The amounts of methyl cinnamate formed at intervals are shown in FIG. 2.

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