New cyclopropanecarboxylates, their production and insecticide containing them as an active ingredient
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0050454A1
公开(公告)日:1982-04-28
Known pyrethrum insecticides can be expensive, of limited application and, indeed, not as effective as natural pyrethrin or allethrin. In an attempt to overcome these drawbacks carboxylic acid esters have been discovered of the formula (I),
wherein R1 is a hydrogen atom or a methyl group, and when R1 is a hydrogen atom, R2 is a group of the formula,
(in which X is a methyl group, a chlorine, bromine or fluorine atom), and when R1 is a methyl group, R2 is a methyl group; and Y is a 1-methyl-2-propenyl, 1-methyl-2-propynyl, 2-cyclopentenyl or 2-cyclohexenyl group.
已知的除虫菊酯杀虫剂价格昂贵,应用范围有限,而且实际上不如天然除虫菊酯或烯丙基菊酯有效。为了克服这些缺点,人们发现了式 (I) 的羧酸酯、
其中 R1 是氢原子或甲基,当 R1 是氢原子时,R2 是式中的一个基团、
(其中 X 为甲基、氯原子、溴原子或氟原子),当 R1 为甲基时,R2 为甲基;Y 为 1-甲基-2-丙烯基、1-甲基-2-丙炔基、2-环戊烯基或 2-环己烯基。