发明授权
US4281170A Process for the preparation of pyrethrins and analogues thereof and insecticidal compositions containing the same 失效
除虫菊酯及其类似物的制备方法和含有它的杀虫组合物

Process for the preparation of pyrethrins and analogues thereof and
insecticidal compositions containing the same
摘要:
A method of making an insecticidal pyrethrin by oxidation in aprotic organic solvent. The compounds are of the formula: ##STR1## wherein R.sup.11 is straight or branched chain lower alkyl or 1-alkenyl or hydrogen;R and R.sup.12 are the same or different and are hydrogen, halogen or lower alkyl or one of the moieties R and R.sup.12 is lower alkoxycarbonyl.
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