Title:
PROCESS FOR PRODUCING THIOSEMICARBAZIDES
Document Type and Number:
WIPO Patent Application WO2002081438
Kind Code:
A3
Abstract:
A process is provided for producing a thiosemicarbazide which includes the steps of reacting an alkylamine with carbon disulphide in the presence of a base selected from N,N-diisopropylethylamine and N,N,-diisopropyl-methylamine to produce an intermediate and converting the intermediate into the thiosemicarbazide. The process has particular application to producing 4-methyl-3-thiosemicarbazide, an intermediate useful in producing the broad-spectrum herbicide tebuthiuron.
Inventors:
DE KLERK COLETTE (ZA)
Application Number:
PCT/IB2002/001023
Publication Date:
November 28, 2002
Filing Date:
April 02, 2002
Export Citation:
Assignee:
DOW AGROSCIENCES LCC (US)
DE KLERK COLETTE (ZA)
DE KLERK COLETTE (ZA)
International Classes:
C07C337/06; C07D285/135; C07D285/12; (IPC1-7): C07C337/06; C07D285/12
Foreign References:
| EP0339964A2 | 1989-11-02 | |||
| GB1342121A | 1973-12-25 |
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