Chromene derivatives and pesticidal composition comprising the s

Details Chromene derivatives and pesticidal composition comprising the s Chromene derivatives and pesticidal composition comprising the s

1988-03-03

1989-09-12

Chan, Nicky

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

549408, A01N 4316, C07D31164

Patent

active

048660892

ABSTRACT:
The invention relates to a process for the preparation of chromenes of the general Formula V ##STR1## (wherein R.sup.1 and R.sup.2 are hydrogen, optionally halogeno substituted C.sub.1-6 alkyl or aryl;

REFERENCES:
patent: 2354492 (1944-07-01), Adams
patent: 4162326 (1979-07-01), Mihailovski
patent: 4323505 (1982-04-01), Hashimoto et al.
patent: 4542150 (1985-09-01), Bowers
Chatteyia et al, Indian Journ. Chem. 12 (Dec., 1974), pp. 1256-1258.
Gan et al., C.A., 94, 156,693e (1981-Abstract of Hua Hsueh Hsueh Pao, 38, 451 (1980).

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