Title:
【発明の名称】異性化方法
Document Type and Number:
Japanese Patent JP3490083
Kind Code:
B2
Abstract:
Process for obtg. an isomer of a nitrile of formula RCH(CN)R1 (I), or a racemic- modification contg. isomer and enantiomer, comprising treatment of the epimer of the enantiomer, or a racemic- modification comprising epimer and enantiomer, in soln. or in slurry, in a polar organic solvent, with a source of cyanide ions in absence of a base; the prod. being less soluble in the solvent or diluent than the substrate, is new. In (I) R, R1 = any organic radical linked directly or through a heteroatom to the C atom bearing the CN gp.; provided that at least one of R, R1 contains at least one resolved chiral centre stable under the conditions of the process.
Inventors:
CROUF, Ernest Stephen
Milner, David John
Milner, David John
Application Number:
JP51123493A
Publication Date:
January 26, 2004
Filing Date:
December 15, 1992
Export Citation:
Assignee:
Syngenta Limited
International Classes:
C07B55/00; C07B57/00; C07B63/00; C07C253/00; C07C253/30; C07C253/32; C07C255/38; C07C255/39; (IPC1-7): C07C253/00; C07C255/39
Domestic Patent References:
| JP5414944A | ||||
| JP5459248A |
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)