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    • 9. 发明授权
    • Pesticides
    • 农药
    • US4464391A
    • 1984-08-07
    • US172943
    • 1980-07-28
    • Michael ElliottNorman F. JanesDavid A. Pulman
    • Michael ElliottNorman F. JanesDavid A. Pulman
    • A01N37/10A01N37/36A01N53/00A01N53/02C07C45/29C07C45/43C07C45/63C07C45/67C07C49/86C07C69/743C07C255/53C07C121/75
    • C07C255/00A01N37/10A01N37/36A01N53/00C07C45/292C07C45/43C07C45/63C07C45/673C07C49/86
    • New insecticides are of formula: ##STR1## wherein R.sup.1 represents hydrogen or a methyl group; R.sup.2 represents hydrogen or a halogeno or lower alkyl group; R.sup.3 represents hydrogen or a halogeno or carbo(lower alkoxy) group which contains at least 2 carbon atoms in the lower alkoxy residue when R.sup.2 represents methyl; with the proviso that (a) R.sup.2 and R.sup.3 each represent hydrogen only when R.sup.1 represents methyl, (b) when R.sup.1 and R.sup.3 each represent hydrogen and R.sup.2 represents alkyl, that alkyl group contains at least 2 carbon atoms and (c) when R.sup.3 represents halogeno, R.sup.2 represents hydrogen or halogeno; and R represents a group which forms insecticidal esters with chrysanthemic acid e.g. 5-benzyl-3-furylmethyl, 3-phenoxybenzyl, .alpha.-cyano-3-phenoxybenzyl. The esters are prepared by forming the ester linkage conventionally or by a Wittig reaction using a 3-formyl- or 3-acetyl-2,2-dimethyl cyclopropane carboxylic acid esterified with the desired residue or by an alkyl group which is subsequently converted to the desired residue.
    • 新的杀虫剂具有下式:其中R 1表示氢或甲基; R2表示氢或卤代或低级烷基; 当R 2表示甲基时,R 3表示氢或低级烷氧基残基中含有至少2个碳原子的卤代或碳(低级烷氧基)基团; 条件是(a)R 2和R 3各自表示氢,当R 1表示甲基时,(b)当R 1和R 3各自表示氢且R 2表示烷基时,该烷基含有至少2个碳原子,和(c)当R 3表示 卤代,R 2表示氢或卤素; R表示与菊酸形成杀虫剂的基团,例如, 5-苄基-3-呋喃基甲基,3-苯氧基苄基,α-氰基-3-苯氧基苄基。 酯通过常规形成酯键或通过Wittig反应制备,使用用所需残基酯化的3-甲酰基或3-乙酰基-2,2-二甲基环丙烷羧酸或通过烷基将其转化为 所需残留物。