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>The pyrethrins and related compounds. Part XXXIII.Effective combinations in the gemdimethyl‐central group region of non‐ester pyrethroids
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The pyrethrins and related compounds. Part XXXIII.Effective combinations in the gemdimethyl‐central group region of non‐ester pyrethroids
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机译：The pyrethrins and related compounds. Part XXXIII.Effective combinations in the gemdimethyl‐central group region of non‐ester pyrethroids
AbstractSynthesis and testing for insecticidal activity ofa wide range of combinations representing simultaneous variation in the acid or alcohol and central fragments of non‐ester pyrethroids reveals strong interactions between these changes, When the gemdimethyl (CMe2), or the equivalent cyclopropyl, group is present in the central chain rather than in a side chain, a new set of requirements for effective central groups applies; those identified as conferring highest activity in this situation are ; (CH2)3; CH2CO. CH2 and CH2O. CH2. Other variations establish the limits to structural changes within these combinations, for activi
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