EP 1377546 A2 20040107 - PROCESS FOR PRODUCING THIOSEMICARBAZIDES
Title (en)
PROCESS FOR PRODUCING THIOSEMICARBAZIDES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON THIOSEMICARBAZIDEN
Title (fr)
PROCEDE DE PRODUCTION DE THIOSEMICARBAZIDES
Publication
Application
Priority
- IB 0201023 W 20020402
- ZA 200102904 A 20010409
Abstract (en)
[origin: WO02081438A2] 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.
IPC 1-7
IPC 8 full level
C07C 337/06 (2006.01); C07D 285/135 (2006.01); C07D 285/12 (2006.01)
CPC (source: EP KR)
C07C 337/06 (2013.01 - EP KR); C07D 285/135 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02081438 A2 20021017; WO 02081438 A3 20021128; BR 0208743 A 20040622; CA 2446918 A1 20021017; CN 1518539 A 20040804; EP 1377546 A2 20040107; HU P0303844 A2 20040329; IL 158288 A0 20040512; JP 2004536795 A 20041209; KR 20030086351 A 20031107; MX PA03009215 A 20040310
DOCDB simple family (application)
IB 0201023 W 20020402; BR 0208743 A 20020402; CA 2446918 A 20020402; CN 02807897 A 20020402; EP 02716977 A 20020402; HU P0303844 A 20020402; IL 15828802 A 20020402; JP 2002579426 A 20020402; KR 20037013168 A 20031008; MX PA03009215 A 20020402