The Korean Journal of Pesticide Science (농약과학회지)
- Volume 5 Issue 2
- /
- Pages.33-36
- /
- 2001
- /
- 1226-6183(pISSN)
- /
- 2287-2051(eISSN)
Synthesis of new sulfonylureas and their herbicidal effects
새로운 Sulfonylurea 유도체의 합성과 제초활성
-
Jeon, Dong-Ju
(Korea Research Institute of Chemical Technology) ;
- Koo, Dong-Wan (Korea Research Institute of Chemical Technology) ;
-
Ko, Young-Kwan
(Korea Research Institute of Chemical Technology) ;
-
Hong, Kyung-Sik
(Korea Research Institute of Chemical Technology) ;
-
Kim, Dae-Whang
(Korea Research Institute of Chemical Technology)
- Published : 2001.06.30
Abstract
New series of sulfonylureas containing substituted thiophene with 2-chloromethyl-1,3-dioxolane group were prepared, and their herbicidal effects were tested(in vivo) in the upland conditions and in the paddy submerged conditions. The sulfonylureas in which 4,6-dimethoxy- or 4-methyl-6-methoxy group in pyrimidine or triazine ring showed good herbicidal effects at a rate of 0.1 kg/ha. However, they showed weaker herbicidal effects than that of sulfonylureas containing substituted thiophene with 2-fluoromethyl-1,3-dioxolane group in general.
2-Chloromethyl-1,3-dioxolane기가 치환된 새로운 thiophene sulfonylurea계 유도체들을 합성하였고, 신규 합성된 화합물을 발아전 토양처리와 발아후 경엽처리를 통하여 문제잡초 9종의 제초활성을 규명하였으며, 답작 조건의 이앙벼 및 주요 잡초에 대한 제초활성도 시험하였다. 이 화합물들의 제초활성은 헤테로고리의 치환기에 따라 매우 다르게 나타났는데, 4, 6 위치에 각각 dimethoxy, 혹은 methyl, methoxy가 치환된 pyrimidine, 혹은 triazine이 붙어있는 sulfonylurea들이 활성이 좋았다. 그러나 이들은 2-fluoromethyl-1,3-dioxolane기가 치환된 thiophene sulfonylurea계 유도체보다 일반적으로 제초활성이 약하게 나타났다.