2,3-Dihydro-4-pyrone derivatives, their preparation the herbicid

Details 2,3-Dihydro-4-pyrone derivatives, their preparation the herbicid 2,3-Dihydro-4-pyrone derivatives, their preparation the herbicid

1981-10-28

1983-05-17

Chan, Nicky

Chemistry: fertilizers

Processes and products

Forms or conditioning

549420, A01N 4316, C07D30922

Patent

active

043838499

ABSTRACT:
The invention relates to new 2,3-dihydro-4-pyrone derivatives.
These compounds correspond to the formula: ##STR1## in which R.sub.2 represents an alkyl radical (C.sub.2 -C.sub.3) and R.sub.3 represents and alkyl radical (C.sub.1 -C.sub.4), an alkenyl radical (C.sub.3 -C.sub.5) or an alkynyl radical (C.sub.3 -C.sub.5).
They can be used for destroying weeds in crops, in particular sunflower and cotton crops.

REFERENCES:
patent: 4060533 (1977-11-01), Nadelson
patent: 4297367 (1981-10-01), Guigues et al.
patent: 4316737 (1982-02-01), Guigues et al.
Gelin et al., Bull. Soc. Chim. Fr., (1), 288-298 (1968).

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