Phytotoxic studies on azine compounds. Part I. Phytotoxic properties of .ALPHA.-substituted benzylamino-s-triazines.
作者:Hiroyoshi OMOKAWA、Nobumasa ICHIZEN、Tetsuo TAKEMATSU
DOI:10.1271/bbb1961.51.2563
日期:——
α-Substituted benzylamino-s-triazines were synthesized, and their phytotoxic activity and phytotoxic symptom against paddy weeds and transplanted rice seedlings were evaluated. Some of these compounds exhibited potent phytotoxicity against the weeds, high selectivity between the rice and the weeds, and had different phytotoxic properties to atrazine and simetryn. Among these compounds, 2-chloro-4-ethylamino-6-α-methylbenzylamino-s-triazine (2), 2-chloro-4-ethylamino6-α-ethylbenzylamino-s-triazine (3), 2-chloro-4-diethylamino-6-α-methylbenzylamino-s-triazine (17), and 2-chloro-4-diisopropylamino-6-α-methylbenzylamino-s-triazine (19) were found to have high phytotoxic activity and selectivity. The phytotoxic symptom of these compounds was mainly growth inhibition to the weeds. Two of these, the diethylamino (17) and diisopropylamino (19) compounds, showed growth inhibition activity without burning the leaf of rice plants at high doses.
合成了α-取代苄氨基-s-三嗪类化合物,并评估了它们对稻田杂草和移栽水稻幼苗的植物毒性活性及其植物毒性症状。其中一些化合物对杂草表现出强的植物毒性,并具有较高的水稻与杂草之间的选择性,且其植物毒性特性与阿特拉津和西美噻苯不同。在这些化合物中,2-氯-4-乙基氨基-6-α-甲基苄氨基-s-三嗪(2)、2-氯-4-乙基氨基-6-α-乙基苄氨基-s-三嗪(3)、2-氯-4-二乙基氨基-6-α-甲基苄氨基-s-三嗪(17)和2-氯-4-二异丙基氨基-6-α-甲基苄氨基-s-三嗪(19)被发现具有较高的植物毒性活性和选择性。这些化合物的植物毒性症状主要表现为对杂草的生长抑制。其中,二乙基氨基(17)和二异丙基氨基(19)这两种化合物在高剂量下表现出抑制水稻植物生长的活性,但并未灼烧水稻的叶片。