Title:
【発明の名称】セミカルバジドの新規製造方法
Document Type and Number:
Japanese Patent JP2952712
Kind Code:
B2
Abstract:
A process for producing semicarbazide which comprises reacting a compound of formula (I) with ammonia in the absence or presence of a catalyst comprising a chloride, hydroxide, sulfate, carbonate, acetate, salicylate, amine complex or ethylenediamine complex of zinc or cadmium, or a mixture thereof. This process is advantageous in that it is free from the problem of the use of a large amount of sodium hydroxide and the generation of by-product sodium carbonate.
Inventors:
MAEKAWA TSUKASA
HAYASHI HIROYASU
KAMYA KAZUSAKI
HAYASHI HIROYASU
KAMYA KAZUSAKI
Application Number:
JP51057491A
Publication Date:
September 27, 1999
Filing Date:
June 13, 1991
Export Citation:
Assignee:
OOTSUKA KAGAKU KK
International Classes:
B01J23/06; B01J27/053; B01J27/138; B01J27/232; B01J31/04; B01J31/18; B01J31/22; C07C281/06; C07B61/00; (IPC1-7): C07C281/06; B01J23/06; B01J27/053; B01J27/138; B01J27/232; B01J31/04; B01J31/18; B01J31/22
Domestic Patent References:
| JP60136552A | ||||
| JP6144864A |
Other References:
【文献】米国特許4482738(US,A)
Attorney, Agent or Firm:
Eiji Saegusa (2 others)