Tetrahydro-1,3-oxazines

Details Tetrahydro-1,3-oxazines Tetrahydro-1,3-oxazines

1980-03-24

1981-10-20

Randolph, John D.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 92, 544 6, 544 88, 544 92, A01N 4386, C07D26504, C07D26512

Patent

active

042958750

ABSTRACT:
New tetrahydro-1,3-oxazines of the formula ##STR1## where R denotes linear or branched haloalkyl of up to 3 carbon atoms, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical or different and each denotes hydrogen or linear or branched alkyl of up to 3 carbon atoms, R.sup.6 denotes hydrogen or linear or branched alkyl of up to 8 carbon atoms, R.sup.7 denotes hyrogen, linear or branched alkyl of up to 8 carbon atoms, alkoxyalkyl of up to 6 carbon atoms or dialkoxyalkyl of up to 8 carbon atoms, and R.sup.6 and R.sup.7 may together form a methylene chain of 4 or 5 carbon atoms.
The compounds are antagonistic agents and, as such, increase the tolerance of herbicidal acetanilides by crop plants. Herbicidal agents containing the tetrahydro-1,3-oxazines in combination with haloacetanilides are suitable for combating unwanted plant growth in Indian corn and cereal crops.

REFERENCES:
patent: 3719466 (1973-03-01), Ahle
patent: 3989503 (1976-11-01), Pallos et al.
patent: 4021224 (1977-05-01), Pallos et al.

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