C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/477.3
C07C 67/38 (2006.01) B01J 10/00 (2006.01) B01J 19/00 (2006.01) C07C 69/618 (2006.01)
Patent
CA 1310661
ABSTRACT OF THE DISCLOSURE An improved process is disclosed for preparing a cinnamate ester by reacting a styrene selected from the group consisting of styrene, alkyl derivatives of styrene, and styrene derivatives containing, on the automatic ring, one or more substituent which do not impair the reaction and alcohol, carbon monoxide, and oxygen in the presence of palladium metal or a compound thereof and a copper compound as a catalyst. The improvement includes blowing a feed gas mixture containing carbon monoxide and oxygen into a reaction mixture initially comprising the selected styrene, the alcohol and the catalyst in a reactor to react the reactants. A gas flowing out of the reactor and containing vapor formed by evaporation of liquid components in the reactor is then passed through a condenser; recirculating the resulting condensate is then recirculated back to the reactor while the remaining gas is discharged. Finally, a gas selected from the group consisting of a portion of the gas thus discharged and a suitable gas selected from the group consisting of an inert gas and carbon dioxide, provided separately, is blown into the reaction mixture through an inlet feed zone which is different from the inlet zone for the feed gas mixture. This increases the evaporation rates of the liquid components in the reactor, so that heat evolved inside the reactor is removed.
586997
Aoki Shinobu
Hara Isao
Takaki Usaji
Yamamoto Yoshihiro
Marcus & Associates
Mitsui Toatsu Chemicals Inc.
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