Abstract: Compounds having the formula ##STR1## in which R is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sub.1 is halo-(C.sub.2 -C.sub.5 alkyl); halo-(C.sub.2 -C.sub.5 alkenyl) or halo-(1-methyl-cyclopropyl); and n is an integer from 1 to 3, and their amine salts are insect repellents.

Abstract: Compounds having the formula ##STR1## in which R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl and R.sub.2 and R.sub.3 are C.sub.1 -C.sub.4 alkyl are insect repellents.

Abstract: Compounds having the formula ##STR1## in which R is hydrogen or C.sub.1 -C.sub.4 alkyl are insect repellents.

Abstract: A method for the production of N-phosphonomethylglycine which comprises reacting a 2-oxazolidone starting compound of the formula ##STR1## with p-formaldehyde, then adding a substituted phosphorus compound of the formula PXYZ wherein X is halogen, and Y and Z are independently selected from the group consisting of halogen, alkoxy having from 1-10 carbon atoms, and aryloxy, said reaction being conducted in the presence of a low molecular weight carboxylic acid solvent for the reactants, at a combination of time and temperature sufficient to cause the reaction to go to completion, and converting the 2-oxo-3-oxazolidinyl methyl phosphonic acid thus formed to N-phosphonomethylglycine.

Abstract: Compounds having the formula ##STR1## in which R is C.sub.3 -C.sub.5 alkyl or C.sub.3 -C.sub.5 alkenyl and n is an integer from 1 to 3, are effective to repel insects.

Abstract: Compounds having the formula ##STR1## in which R is C.sub.3 -C.sub.5 alkyl, C.sub.3 -C.sub.5 alkenyl, cyclopropyl, or ##STR2## R.sub.1 is C.sub.1 -C.sub.4 alkyl; R.sub.2 is C.sub.1 -C.sub.4 alkyl, and the side chain is substituted on the pyridyl ring at the 2- or 3-position, are effective insect repellents.

Abstract: The compound N,N-diethyl-2-(4-thiochromanyloxy)-propionamide, ##STR1## is an insect repellent.

Abstract: Herbicidally active thiolcarbamates are employed in combination with certain amine oxanilic acid salts having the formula ##STR1## in which R is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, phenyl and benzyl, and a and b are both integers from zero to four such that the sum of a and b is four. In a typical application, the amine oxanilic acid salts are included in sufficient quantity to lessen the rate of soil degradation of the thiolcarbamate. As a result, the herbicidal effectiveness of the thiolcarbamate is enhanced and prolonged, rendering a single application of the herbicide effective over a longer period of time.

Abstract: Compounds having the formula ##STR1## in which A is C.sub.1 -C.sub.3 alkylene, are effective insect repellents.

Abstract: Compounds having the formula ##STR1## in which R is C.sub.3 -C.sub.5 cycloalkyl, are insect repellents.

Abstract: Post-emergent herbicides having the formula ##STR1## wherein R is alkyl having 1-4 carbon atoms, inclusive; or alkenyl having 2-4 carbon atoms, inclusive; andX is selected from the group consisting of alkyl having 1-4 carbon atoms, inclusive; cycloalkyl having 3-6 carbon atoms, inclusive; dialkylamine wherein the alkyl groups each have 1-4 carbon atoms, inclusive; and N-alkyl-N-alkoxyamine wherein the alkyl and alkoxy groups each have 1-4 carbon atoms, inclusive.

Abstract: A method for the production of N-phosphonomethylglycine is disclosed which comprises the steps of:(1) first reacting 2,5-diketopiperazine with p-formaldehyde, then adding substituted phosphorus compound, all in the presence of a low molecular weight carboxylic acid solvent, to form an intermediate bis-phosphonomethyl-2,5-diketopiperazine compound,(2) isolating said intermediate compound,(3) subsequently reacting said intermediate bis-phosphonomethyl-2,5-diketopiperazine compound with a hydrolyzing agent; and,(4) thereafter acidifying said reactants with a mineral acid to form the end product, N-phosphonomethylglycine.

Abstract: Novel compounds having the formula ##STR1## in which R is alkyl, cycloalkyl, aralkyl, chlorophenyl or chlorobenzyl, R.sub.1 is hydrogen or lower alkyl and n is 1, 2, or 3, are insect repellents.

Abstract: Herbicidally active thiolcarbamates are employed in combination with certain amine oxanilic acid salts having the formula ##STR1## in which R is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, phenyl, and benzyl, and a and b are both integers from zero to four such that the sum of a and b is four. In a typical application, the amine oxanilic acid salts are included in sufficient quantity to lessen the rate of soil degradation of the thiolcarbamate. As a result, the herbicidal effectiveness of the thiolcarbamate is enhanced and prolonged, rendering a single application of the herbicide effective over a longer period of time.

Abstract: Compounds having the formula ##STR1## in which R is hydrogen or C.sub.1 -C.sub.4 alkyl; X and Y are independently halogen or methyl; and n is an integer from 1 to 3, are effective insect repellents.

Abstract: Compounds having the formula ##STR1## in which R is C.sub.1 -C.sub.4 alkyl, are effective insect repellents.