Title:
シクロアルキルおよびハロアルキルo-アミノフエニルケトン類の改良された製造方法
Document Type and Number:
Japanese Patent JP4270524
Kind Code:
B2
Abstract:
There is provided an improved method for the production of o-aminophenyl ketones of formula I wherein R is C3-C6cycloalkyl or C1-C6haloalkyl. There is also provided an effective method for the preparation of the formula I compound o-aminophenyl cyclopropyl ketone via the dehydrohalogenation of 1-(o-aminophenyl)-4-halo-1-butanone in the presence of a base and a phase transfer catalyst. Compounds of formula I are key intermediates in the manufacture of sulfamoyl urea herbicides.
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Inventors:
Albert Anthony Sebasco
Application Number:
JP31436294A
Publication Date:
June 03, 2009
Filing Date:
November 25, 1994
Export Citation:
Assignee:
Wyeth Holdings Corporation
International Classes:
B01J31/02; C07B37/10; C07C225/22; C07B61/00; C07C49/293; C07C209/68; C07C221/00
Domestic Patent References:
| JP52100434A | ||||
| JP63275548A | ||||
| JP6019753A | ||||
| JP2233683A | ||||
| JP53112853A | ||||
| JP52151148A |
Foreign References:
| US5009699 |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office