Showing papers on "Pyrazoline published in 1987"

Synthesis and physico-chemical studies of some novel mixed-ligand cyanonitrosyl {CrNO}5 complexes of chromium with 2-3-pyrazoline-5-one derivatives

Abstract: A new series of spin-paired hexa-coordinated mixed-ligand cyanonitrosyl complexes of chromium (having {CrNO}5 electron configuration(1)) of the type [Cr(NO)(CN)2(L)2(H2O)] (where L=4-methyl-2-pyrazoline-5-one(1), 2,3-dimethyl-1-phenyl-3-pyrazoline-5-one(2) or 4-dimethylamino-2,3-dimethyl-1-phenyl-3-pyrazoline-5-one(3) have been synthesized in the solid state by the interaction of potassium pentacyanonitrosylchromate(I) monohydrate, K3[Cr(NO)(CN)5]· H2O with L in aqueous acetic acid. The products, which have been characterized by elemental analyses, molar conductances, thermogravimetric analyses, magnetic measurements, electron spin resonance and infrared spectral studies, contain low-spin chromium(I). An octahedral structure has been suggested for the complexes.

1-phenyl-3-(2-nitroethenyl)pyrazoline and 1-phenyl-3-(2,2-dicyanoethenyl)pyrazoline

Abstract: A compound of the formula: ##STR1## wherein E is an ethenyl group of the formula: ##STR2## in which X is H when Y is NO 2 ; Y is H when X is NO 2 ; or X is CN when Y is CN which has the capacity to form a crystal in which the molecules are aligned substantially in the same manner giving it non-linear optical properties. The crystalline product is thus adapted for use in devices exhibiting non-linear optical effects.

Tetrafluoro-2,3-dihydrobenzofurans

Abstract: Benzofurans of the formula ##STR1## wherein R1 is hydrogen, nitro, amino, phthalimido or acetamido, R2 is at least one of halo, cyano, alkyl(C1 -C8), cycloalkyl(C3 -C8), hydroxy, alkoxy(C1 -C8), acyl(C1 -C8), acyloxy(C1 -C8), alkoxy(C1 -C8)carbonyl, alkoxy(C1 -C8)carbonylalkyl(C1 -C8), phenyl, phenyloxy, trifluoromethyl or dialkyl(C1 -C8)amino, m is 0-3, and at least one of the carbon atoms of the benzene ring of said benzofuran is substituted The compounds are intermediates in the preparation of pyrazoline insecticides

Steroidal pyrazoline and pyrazole

Abstract: Synthese des composes du titre a partir de l'acetoxy-3 pregnene-5one-20 et du pyridinecarbaldehyde-2

Novel pyrazoline compound, production thereof and insecticide containing said compound

Abstract: NEW MATERIAL:A compound expressed by formula I (X is H or halogen; Y is X or CF3; Z is O or S; A is methylene or S) EXAMPLE:1-(4-Chlorophenylcarbamoyl)-3-(4-benzylphenyl)-4-phenyl-2-pyra zoline USE:An insecticide which is an excellent insecticidal compound capable of exhibiting a wide insecticidal spectrum and high insecticidal activity on resistant injuious insects and effective particularly for sanitary injurious insects, eg Cuplex pipiens pallens Coquillett injurious insects of the order Lepidoptera, sg tobacco cutworm house injurious insects, eg termite or bark beetle, particularly injurious insects of the order Lepidoptera PREPARATION:A 3-aryl-4-phenyl-2-pyrazoline derivative expressed by formula II is reacted with phenyl isocyanate or isothiocyanate derivative expressed by formula III in or without an inert solvent, eg anhydrous tetrahydrofuran, at -10-+120 degC for 01-30hr to afford and aimed compound expressed by formula I

Picture-reading equal magnification sensor

Abstract: PURPOSE:To increase the speed of response and the SN ratio by forming a photoconductive film mainly comprising at least one kind of a fluorenone compound, an alpha-substituted stilbene compound, a diarylmethane compound, an anthracene compound, a hydrazone compound, a divinyl benzene compound and a pyrazoline compound and at lest one kind of metal-free phthalocyanine or metallic phthalocyanine. CONSTITUTION:A picture-reading equal magnification sensor has a photoelectric conversion element constituted by shaping a discrete electrode, a common electrode and a photoconductive film mainly comprising at lest one kind of a fluorenone compound, an alpha-substituted stilbene compound, a diarylmethane compound, an anthracene compound, a hydrazone compound, a divinyl benzene compound and a pyrazoline compound and at least one kind of metal-free phthalocyanine or metallic phthalocyanine onto an insulating substrate. Accordingly, the speed of response and SN ratio of the long-sized equal magnification sensor can be increased.

Electrophotographic recording material comprising a pyrazoline derivative

Abstract: An electrophotographic recording material is comprised of an electrically conducting film base, an optional, adhesion-promoting, insulating intermediate film and at least one binder-containing photoconductive film that also contains a charge-carrier generating compound and pyrazoline charge-transporting compound represented by the formula ##STR1## in which n denotes zero or 1 and R1, R2, R3, R4 and R5 respectively denote hydrogen or halogen, preferably chlorine or bromine. Such a recording material has a low pre-exposure sensitivity combined with very good photosensitivity, and a low residual charge level in cyclic behavior. The charge-transporting compound has a low tendency to crystallize out in the film.

2-pyrazoline-5-one or such and production thereof

Abstract: NEW MATERIAL:A compound shown by formula I [R and R are H, (substituted)alkyl, alkenyl, lower alkoxycarbonyl, formyl, (substituted) phenyl, (substitued)naphthyl, (substituted)aralkyl, (substituted)heterocyclic group or R and R are bonded to form ring; R is H, lower alkyl or lower alkoxycarbonyl; R is H or lower alkyl] EXAMPLE:1-Ethyl-2-pyrazolin-5-one USE:A drug and an agricultural chemical An intermediate especially for an active ingredient compound for a herbicide for paddy fields PREPARATION:A hydrazine derivative shown by formula III [X is lower alkoxycarbonyl or -NR R (R and R are H, lower alkyl, lower alkenyl or R and R are bonded to form ring)] is condensed with a compound shown by formula IV to give a novel hydrazone derivative shown by formula II, which is subjected to ring closure in the presence of a base optionally by the use of a solvent at 50-150 degC for 1-30hr to give a compound shown by formula I

Electro photographic recording material.

Abstract: An electrophotographic recording material is comprised of an electrically conducting film base, an optional, adhesion-promoting, insulating intermediate film and at least one binder-containing photoconductive film that also contains a charge-carrier generating compound and pyrazoline charge-transporting compound represented by the formula (I) in which n denotes zero or 1 and R1, R2, R3, R4 and R5 respectively denote hydrogen or halogen, preferably chlorine or bromine. Such a recording material has a low pre-exposure sensitivity combined with very good photosensitivity, and a low residual charge level in cyclic behavior. The charge-transporting compound has a low tendency to crystallize out in the film.