Title:
MANUFACTURE OF 1-AMINO-1,3,5-TRIAZINE- 2,4(1H,3H)-DIONE
Document Type and Number:
Japanese Patent JPS57158766
Kind Code:
A
Abstract:
Herbicidal 1-amino-1,3,5-triazine-2,4(1H, 3H)-diones of the general formula (I) are obtained in good yields if an N-substituted O-aryl N-chlorocarbonyl carbamate of the general formula (II) is reacted with an isothiosemicarbazone of the general formula (III) or hydrohalide thereof, (R1 to R4 in formulae (I) to (III) having the meanings given in the description), at a temperature between 0 DEG and 50 DEG C., in the presence of an acid-binding agent, the open-chain intermediate products formed thereby are then heated (if appropriate without intermediate isolation), in a second stage, to a temperature between 50 DEG and 150 DEG C. and, finally, in a third stage, the 1-alkylideneamino-1,3,5-triazine-2,4(1H, 3H)-dione formed thereby is hydrolyzed (if appropriate again without intermediate isolation) in an acid medium.
Inventors:
KARURUFURIITO DEITSUKORE
ENGERUBERUTO KIYUURE
ENGERUBERUTO KIYUURE
Application Number:
JP2617482A
Publication Date:
September 30, 1982
Filing Date:
February 22, 1982
Export Citation:
Assignee:
BAYER AG
International Classes:
A01N43/64; C07C67/00; C07C313/00; C07C337/08; C07D251/38; (IPC1-7): A01N43/64; C07C149/14; C07D251/38