Title:
PRODUCTION OF BENZYL ALCOHOL
Document Type and Number:
Japanese Patent JP3807683
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently obtain the subject compound without using a base by a new method for hydrolyzing benzyl chloride under specific conditions and stopping the reaction at a point of time when the conversion of benzyl chloride is incomplete and to avoid problems of formation of NaCl and waste liquor.
SOLUTION: Benzyl chloride is hydrolyzed in the molar ratio of benzyl chloride to water of 1:10 to 1:70, preferably l:20 to 1:50 at 80-180°C, preferably 90-160°C without adding a base and a water-soluble organic solvent until the conversion ratio of benzyl chloride reaches 35-99%, preferably 45-85%. The reaction time is preferably 4-120 minutes. Preferably the reaction is carried out while vigorously stirring the reaction mixture by using a static mixer, ultrasonic wave, etc. In the case of the reaction at ≥100°C, the reaction is performed under pressure due to vapor pressure and the excessive pressure is preferably ≤25 bar. Preferably hydrochloric acid prepared as a by-product is concentrated and industrially reused.
Inventors:
Hans-Joseph Bouiscyu
Erhard-Guyunter Hoffmann
Ursula Jansen
Peter Orms
Bernd-Ulrich Schienke
Erhard-Guyunter Hoffmann
Ursula Jansen
Peter Orms
Bernd-Ulrich Schienke
Application Number:
JP16250196A
Publication Date:
August 09, 2006
Filing Date:
June 04, 1996
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
C07C29/12; C07C29/124; C07C33/22; (IPC1-7): C07C33/22; C07C29/12
Domestic Patent References:
| JP6438036A |
Other References:
JUSTUS LIEBIGS ANN. CHEMIE,1879, Vol.196,p.353-354
ANNAL. CHEM. PHARMACIE,1866, Vol.139,p.303-327
ANNAL. CHEM. PHARMACIE,1866, Vol.139,p.303-327
Attorney, Agent or Firm:
Heikichi Odashima
Previous Patent: CONTROLLER FOR DOUBLE DECK ELEVATOR GROUP
Next Patent: SPUTTERING METHOD AND SPUTTERING DEVICE
Next Patent: SPUTTERING METHOD AND SPUTTERING DEVICE