Abstract: .beta.-hydroxyketones are prepared by reacting an aldehyde with acetone in the presence of perhydroisoindole or pyrrolidine and water. The resulting .beta.-hydroxyketone is further reacted in the presence of a solvent mixture to produce .alpha.-.beta.-unsaturated ketones.

Abstract: There is provided a method for the production of hydroxylamine derivatives or the salt thereof in which a salt of hydroxamic acid is reacted with an alkylating agent such as diethyl sulfate to form an ester of hydroxamic acid, which is reacted with mineral acid in an aqueous solution of lower alcohol so as to prepare hydroxylamine derivatives or the salt thereof. In this process, the incorporation of an oxidizing agent or aldehydes in the reaction system will significantly reduce the content of nitrosoamines in the resulting solution of hydroxylamine derivatives or the salt thereof. Therefore, the resulting hydroxylamine derivatives obtained with a lesser content of harmful compound will be useful as an intermediate for the production of drugs and pesticides.

Abstract: .alpha., .beta.-unsaturated-ketones are synthesized by reacting with an aldehyde and an alkali metal salt of acetoacetic acid in the presence of an aliphatic secondary amine in the mixture of heterogeneous solvents producing an oil layer and a water layer.

Abstract: Various substituted cyclohexane-1,3-diones are useful as herbicides.An exemplary species is 2-[1-(allyloxyamino)propylidene]-5,5-dimethylcyclohexane-1,3-dione.

Abstract: A compound of the general formula ##STR1## WHEREIN R.sub.1 is lower alkyl having six or less carbon atoms,R.sub.2 is lower alkyl having six or less carbon atoms or lower alkenyl having six or less carbon atoms,R.sub.3 is hydrogen or lower alkoxycarbonyl having six or less carbon atoms,R is aliphatic or aromatic ester residue of dibasic or tribasic acid andn is 2 or 3;Is useful as herbicide.

Abstract: Various substituted cyclohexane-1,3-diones are useful as herbicides.An exemplary species is 2-[1-(allyloxyamino)propylidene]-5,5-dimethylcyclohexane-1,3-dione.

Abstract: A compound of the general formula ##STR1## wherein R.sub.1 is lower alkyl,R.sub.2 is selected from the group consisting of lower alkyl, lower alkenyl and lower alkynyl,A is a formula which is selected from the formula consisting of: ##STR2## where R.sub.3 is selected from the group consisting of hydrogen and lower alkyl,R.sub.4 is selected from the group consisting of lower alkyl and phenyl, andR.sub.3 forms cyclo-alkylene of 4 to 5 carbon atoms by combining with R.sub.4 ; ##STR3## where R.sub.5 and R.sub.7 are selected from the group consisting of hydrogen and lower alkyl andR.sub.6 is lower alkyl; and ##STR4## where R.sub.8 is selected from the group consisting of hydrogen and lower alkyl andR.sub.9 is lower alkyl;Or a metal salt of the compound defined herein above is useful as herbicide.

Abstract: A compound of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, lower alkyl, phenyl and phenyl substituted with halogen or halogenated methyl;R.sub.2 is selected from the group consisting of hydrogen, lower alkyl and lower alkenyloxy;R.sub.3 is selected from the group consisting of lower alkyl and phenyl substituted with halogen;R.sub.4 is selected from the group consisting of lower alkyl, lower alkenyl and benzyl;Or a metal salt of the compound defined herein above; is useful as herbicide.

Abstract: A compound of the formula ##SPC1##Wherein X is hydrogen or halogen:R.sub.1 is alkyl having six or less carbon atoms or phenyl;R.sub.2 is alkyl having 1 to 20 carbon atoms or haloalkyl having six or less carbon atoms or phenyl or phenyl substituted with halogene or nitro or benzyl or phenoxymethyl or 2-phenylvinyl;R.sub.3 is hydrogen or alkyl having 1 to 10 carbon atoms or alkenyl having six or less carbon atoms or alkynyl having six or less carbon atoms or benzyl; a proviso that R.sub.1 and R.sub.2 do not simultaneously represent a methyl group,Is useful as herbicide.

Abstract: A compound of the formula ##SPC1##WhereinR.sub.1 is selected from the group consisting of phenyl and straight or branched chain alkyl;R.sub.2 is selected from the group consisting of straight or branched chain lower alkyl, straight or branched chain lower alkenyl, lower alkynyl, lower alkoxymethyl, lower alkylthiomethyl and benzyl;X is a same or different substituent which is selected from the group consisting of straight or branched chain alkyl, lower alkoxycarbonyl, phenyl, substituted phenyl having at least one substituent selected from the group consisting of halogen, methyl and methoxy, styryl, furyl, thienyl and --(CH.sub.

Abstract: Compounds of the formula ##SPC1##Wherein R.sub.1 and R.sub.2 are alkyl having 2 to 6 carbon atoms or phenyl; R.sub.3 is alkyl having 1 to 10 carbon atoms, alkenyl or alkynyl having up to six carbon atoms; R is alkyl of 1 to 20 carbon atoms, phenyl or phenyl substituted with halogen, methyl, methoxy or nitro; and A is carbonyl or sulfonyl, are effective as herbicides, plant growth regulators and fungicides.

Abstract: Various substituted cyclohexane-1,3-diones are useful as herbicides.An exemplary species is 2-[1-(allyloxyamino)propylidene]5,5-dimethylcyclohexane-1,3-dione.