3,4-dihydro-2H-pyrans useful as pesticides

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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514460, 549416, 549415, 549414, 549378, 548370, 548341, 548333, 548331, A01N 4316, C07D30930

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active

048762750

ABSTRACT:
3,4-dihydro-2H-pyrans of the formula I ##STR1## where R.sup.1 is C.sub.4 -C.sub.20 -alkyl, C.sub.4 -C.sub.20 -alkoxyalkyl, aryl or C.sub.7 -C.sub.20 -arylalkyl, or is aryl or C.sub.7 -C.sub.20 -arylalkyl which bears from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -haloalkoxy, R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.3 is aryl, or aryl bearing from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -haloalkoxy, or the radical ##STR2## where R.sup.4, R.sup.5 and R.sup.6 are hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.7 is phenyl or benzoyl, or phenyl or benzoyl bearing from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy and C.sub.1 -C.sub.8 -haloalkoxy, or a five- or six-membered heterocycle containing one or two oxygen atoms and which is either unsubstituted or substituted by one to three C.sub.1 -C.sub.8 -alkyl groups or one C.sub.3 -C.sub.6 -spirocycloalkyl, and l, m and n are 0 or 1, and their use for combating pests.

REFERENCES:
patent: 3691205 (1972-09-01), Hoffmann et al.
Chemical Reviews, 75, 651-692 (1975).
Chemical Abstracts, 69, 67171z (1968).
Chemical Abstracts, 73, 98731u (1970).
Chemical Abstracts, 76, 14250n (1972).
Chemical Abstracts, 81, 3720t (1974).
Chemical Abstracts, 93, 25857t (1980).
Chemical Abstracts, 101, 23272h (1984).
Khim. Geterotsikl. Soedin., 6, 730 (1970).

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