ARYLSULFONYL UREIDOFURO(2,3-D)PYRIMIDINES AND HERBICIDAL COMPOSITIONS

Compounds of the formula: (wherein A is an unsubstituted or substituted phenyl, phenoxy, pyridyl, fury or thienyl group; W is O or S; X is CH3 min C2H5, Cl, OCH3, OC2H5, N(CH3)2 or SCH3; Y is H, CH3 or C2H5 and Z is H or CH3) and the agriculturally suitable salts thereof possess herbicidal activity....

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1. Verfasser: ZIMMERMAN, W.T
Format: Patent
Sprache:eng
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Zusammenfassung:Compounds of the formula: (wherein A is an unsubstituted or substituted phenyl, phenoxy, pyridyl, fury or thienyl group; W is O or S; X is CH3 min C2H5, Cl, OCH3, OC2H5, N(CH3)2 or SCH3; Y is H, CH3 or C2H5 and Z is H or CH3) and the agriculturally suitable salts thereof possess herbicidal activity. They are also of interest as plant growth regulants and may be used to modify plant growth beneficially as well as to selectively control weeds in crops such as wheat, barley, cotton and soybeans. The compounds may be formulated for use in conventional manner. The compounds may be prepared by a variety of processes e.g. by reacting an appropriately substituted isocyanate or isothiocyanate with an appropriately substituted furo [2,3-d]pyrimidine amine. The furo [2,3-d] pyrimidine amines may be prepared by reaollion of an appropriate keto-ester with guanidine carbonate or by reaction of an appropriate dichloropyrimidine with an alkali metal hydroxide. Compounds corresponding to formula I but in which A represents a benzyl, fury or thienyl group substituted by a carboxyl or carboxylic acid salt moiety are novel intermediates.