Title:
【発明の名称】ブチロラクトンの製造方法
Document Type and Number:
Japanese Patent JP2002517388
Kind Code:
A
Abstract:
Process for producing butyrolactones of the general formula Iwhere R1 and R2 are each hydrogen, alkyl, hydroxyalkyl, substituted or unsubstituted aryl or substituted or unsubstituted trialkylsilyl, by reacting alkynes of the general formula IIwhere R1 and R2 are each as defined above, with carbon monoxide and water in the presence of a rhodium catalyst under pressures from 20 to 300 bar and hydrogenating the unhydrogenated 2(5H)-furanone intermediates comprisesa) reacting the carbonylation reaction mixture with hydrogen at from 150 to 250° C. and from 100 to 300 bar,b) removing the precipitated catalyst and returning it into the carbonylation reaction, andc) subjecting the catalyst-free reaction mixture to a distillation to recover the butyrolactone.
Inventors:
Melanie Brunner
Ralph-Thomas Lane
Udo Royde
Yohem Henkelmann
Ralph-Thomas Lane
Udo Royde
Yohem Henkelmann
Application Number:
JP2000552107A
Publication Date:
June 18, 2002
Filing Date:
May 21, 1999
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C07D307/32; C07D307/33; C07D315/00; (IPC1-7): C07D307/33
Attorney, Agent or Firm:
Toshio Yano (4 outside)