Title:
PRODUCTION OF ALPHA-OXOCARBOXYLIC ACID ESTER
Document Type and Number:
Japanese Patent JP3182131
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method capable of inexpensively and efficiently producing an α-oxocarboxylic acid ester substantially at one stage, by using a 1,2-diol such as inexpensive ethylene glycol, propylene glycol or the like as a raw material.
SOLUTION: A 1,2-diol is oxidized in a vapor phase in a first reactor to give a gaseous α-oxoaldehyde and/or α-hydroxyaldehyde. The gaseous α- oxoaldehyde and/or α-hydroxyaldehyde is mixed with an alcohol or an olefin made into a gaseous state by a vaporizing chamber 14, introduced into a second reactor 11 and oxidatively esterified with molecular oxygen in the presence of a catalyst in the second reactor 11 to produce an α-oxocarboxylic acid ester.
Inventors:
Yoshio Arita
Akihiko Ohta
Ren Hasebe
Noboru Saito
Akihiko Ohta
Ren Hasebe
Noboru Saito
Application Number:
JP2797499A
Publication Date:
July 03, 2001
Filing Date:
February 04, 1999
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C07C67/39; C07B61/00; C07C67/40; C07C69/67; (IPC1-7): C07C69/67; C07C67/39
Domestic Patent References:
| JP3232835A | ||||
| JP5859933A | ||||
| JP8291107A |
Other References:
Ａｃｔａ．Ｃｈｅｍ．Ｓｃａｎｄ．，１９７３，２７，ｐ．３００９−３０１４
Attorney, Agent or Firm:
Takehiko Matsumoto