Abstract: A body-implantable catheter which can be employed for peritoneal dialysis and the like includes a flexible, elongated, perforated tube, together with means for urging at least a portion of the tube into a tightly wound cylindrical helix configuration.

Abstract: Substituted [1,1'-biphenyl]-3-ylmethyl compounds carrying leaving groups are intermediates to insecticidal esters.

Abstract: Benzoxazole compounds of the following structural formula modify the growth and development of plants: ##STR1## wherein U is selected from -hydrogen, -halogen, -lower alkyl, -lower alkenyl, -phenylmethyl, -phenyl, -nitro, -hydroxycarbonyl, -phenylcarbonyl, -halophenylcarbonyl, -phenylthio, -phenylsulfoxy, -phenylsulfonyl, and a substituent of the formula--OZin which Z is -aryl or -aryl carring 1 or 2 substituents independently selected from -halogen, -lower alkyl, -lower haloalkyl, -lower alkoxy, -acetamido, and -phenyl;V is selected from -hydrogen, -halogen and -lower alkyl, or U and V taken together are -C.sub.4 H.sub.4 -- joining adjacent ring positions; andW is selected from -hydrogen, -lower alkyl optionally substituted with -alkoxycarbonyl, and an agriculturally acceptable cation.

Abstract: Bithienyl compounds of the following structural formula are phototoxic insecticides and acaricides: ##STR1## wherein R.sub.1 is selected from hydrogen, halogen, alkyl, haloalkyl, alkoxy, and haloalkoxy;R.sub.2 is selected from hydrogen and halogen;R.sub.3 is selected from hydrogen, alkyl, phenyl, and thienyl; andR.sub.4 is selected from hydrogen, halogen, alkyl, and haloalkyl.

Abstract: Benzimidazole compounds of the following structural formula modify the growth and development of plants: ##STR1## wherein U is selected from -hydrogen, -halogen, -lower alkyl, -lower alkoxy, phenyl, and -phenoxy optionally carrying 1 or 2 substituents independently selected from -halogen and -lower haloalkyl;V is selected from -hydrogen, -halogen, or U and V taken together are --C.sub.4 H.sub.4 -- joining adjacent ring positions;W is selected from -hydrogen and -lower alkyl; andZ is selected from -hydroxy, -lower alkoxy, and --OM where M is an agriculturally acceptable cation, or W and Z together may constitute a chemical bond.

Abstract: Vinyl phosphoric esters of the following formula are effective in the control of insects and acarids: ##STR1## wherein R.sub.1 is lower alkoxy;R.sub.2 is selected from lower alkoxy and lower thioalkyl;R.sub.3 is selected from lower alkyl, phenyl, and halophenyl;R.sub.4 is selected from hydrogen, lower alkyl, halogen, and lower thioalkyl;V is selected from hydrogen, halogen, lower alkyl, lower alkoxy, lower haloalkyl, amino, mono and dialkyl substituted amino, lower alkoxy carbonyl, lower thioalkyl, lower alkyl sulfonyl, nitro, and phenyl;W is oxygen or sulfur;Y is halogen;m is 0-2; andn is 0-2.

Abstract: 2-(Alpha-perhaloalkylbenzyloxy)pyridyl compounds of the following structural formula are intermediates to N-[(alpha-perhaloalkylbenzyloxy)pyridyl]-N'-benzoylurea insecticides: ##STR1## in which R.sub..alpha. is a perhaloalkyl substituent;R.sub.3 is selected from the group consisting of -hydrogen, -halogen and -phenylthio;R.sub.4 is selected from the group consisting of -hydrogen, -halogen, -lower alkyl, -lower alkoxy, -lower alkoxyalkyl, -lower haloalkoxy, -lower alkylthio, -lower alkylsulfonyl, and -diallylamino; orR.sub.3 and R.sub.4 at adjacent ring positions constitute a --OCH.sub.2 O--, --CH.sub.2 C(CH.sub.3).sub.2 O--, or --CF.sub.2 CF.sub.2 O-- bridge;R.sub.5 is -hydrogen or -lower alkyl; andZ is -amino or -nitro.

Abstract: Certain benzocycloalkaneheteroaromaticmethyl, e.g., benzocycloalkanethiophenemethyl, esters and insecticidal compositions containing these esters are useful for the control of a broad range of insects and acarids.

Abstract: 2,2'-Bridged[1,1'-biphenyl]-3-ylmethyl carboxamides and insecticidal compositions containing these carboxamides are useful for the control of a broad range of insects and acarids.

Abstract: Imidazoles of the following structural formula are plant growth regulators: ##STR1## wherein R.sub.4 is selected from the group consisting of --H, --lower alkyl, --NO.sub.2, --CN, and --CONHY; andR.sub.5 is selected from the group consisting of --NZCOR.sub.A, --CONZR.sub.B, --COOZ, --Cl, --Br, --CN, --NO.sub.2, ##STR2## in which Y is selected from the group consisting of --H, --lower alkyl, --aryl, and --substituted aryl;Z is selected from the group consisting of --H and --lower alkyl;R.sub.A is selected from the group consisting of --straight or branched alkyl, --lower alkoxyl, ##STR3## R.sub.B is selected from the group consisting of --straight or branched alkyl, ##STR4## R.sub.C is selected from the group consisting of --H and --halogen; and R.sub.D is selected from the group consisting of --H, --lower alkyl, --lower alkoxyl, --halogen, and --CF.sub.3.

Abstract: Benzothiazole compounds of the following structural formula modify the growth and development of plants: ##STR1## wherein U is selected from -hydrogen, -halogen, -lower alkyl, -lower haloalkyl, -lower alkoxy, -phenyl, and -phenoxy optionally carrying -halogen and -lower haloalkyl substituents;V is selected from -hydrogen and -halogen, or U and V taken together are --C.sub.4 H.sub.4 -- joining adjacent ring positions;Y is selected from -hydrogen and -lower alkoxy;Z is cyclic and either (a) -phenyl optionally carrying 1 or 2 substituents independently selected from -halogen, -nitro, or two substituents taken together are --C.sub.4 H.sub.4 -- joining adjacent ring positions, or (b) Z may be a saturated or partially unsaturated carbocycle, optionally carrying a bicyclic --CH.sub.

Abstract: Nematicidal 3-aryl-4-amino-5-isothiazole acids, esters and amides of the formula ##STR1## wherein A is selected from hydroxy, alkoxy, phenylmethoxy, and --NHR, where R is hydrogen, alkyl, 2-hydroxyethyl or 2-acetyloxyethyl; andZ is selected from hydrogen, halogen, alkyl, alkoxy, difluoromethoxy, thiomethyl, nitro, amino, and phenyl.

Abstract: [1,1'-Biphenyl]-3-ylmethyl pyrethroid esters, as well as processes, uses, and intermediates thereto, are disclosed. The [1,1'-biphenyl]-3-ylmethyl pyrethroid esters control a broad spectrum of insects as well as acarids.

Abstract: Lactones of the formula ##STR1## wherein R is hydrogen or a CX.sub.3 group, and each X is a chlorine or bromine atom, are converted to the known cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acids or lower alkyl esters, from which pyrethroid insecticides are obtained.

Abstract: Hydrazinecarboxamides and carbothioamides of the formula ##STR1## wherein R.sub.1 is selected from alkyl, cyanoalkyl, hydroxyalkyl, and benzyl, R.sub.2 is hydrogen or alkyl, Y is oxygen or sulfur, n is 0-5, and Z is substituted for hydrogen and independently selected from halogen, alkyl, alkoxy, phenoxy, trifluoromethyl, and nitro are useful as nematicides when applied to or incorporated into nematode-infested soil.

Abstract: A 3-halo-2-methylphenylmagnesium halide is cross-coupled with a halobenzene using nickel(II) acetylacetonate as catalyst, producing a 3-halo-2-methyl[1,1'-biphenyl]. The amount of catalyst should be greater than 0.01 mole percent, but not more than 0.1 mole percent, based on the 3-halo-2-methylphenylmagnesium halide to achieve the best yields.

Abstract: An alkali metal cyanate is prepared by heating a heterogeneous mixture of urea and an alkali metal carbonate in a solvent which selectively dissolves urea, but not the alkali metal carbonate.

Abstract: 2,2'-Bridged[1,1'-biphenyl]-3-ylmethyl carboxamides and insecticidal compositions containing these carboxamides are useful for the control of a broad range of insects and acarids.

Abstract: Certain benzocycloalkaneheteroaromaticmethyl, e.g., benzocycloalkanethiophenemethyl, esters and insecticidal compositions containing these esters are useful for the control of a broad range of insects and acarids.

Abstract: Precursors to benzyl compounds, useful in the manufacture of pyrethroid insecticides, are prepared by regiospecific addition of an enamine to a heterocyclic diene accompanied by elimination of volatile by-products.