申请人:American Cyanamid Company
公开号:US04518780A1
公开(公告)日:1985-05-21
A novel process for the preparation of 2-(5,5-disubstituted-4-oxoor thiono)-2-imidazolin-2-yl)nicotinic acids, quinoline-3-carboxylic acids and benzoic acids by the base-catalyzed cyclization of appropriately substituted 2-carbamoyl nicotinic acids, 3-quinolinecarboxylic, or benzoic acids. The products are useful as herbicides.
一种新的制备方法,通过适当取代的2-氨基甲酰基烟酸、3-喹啉甲酸或苯甲酸在碱催化下环化制备2-(5,5-二取代-4-氧代或硫代)-2-咪唑啉-2-基)烟酸、喹啉-3-甲酸和苯甲酸。这些产品可用作除草剂。