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7709687 Dicarbanionic initiator, a process for the preparation and use thereof  
The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I)...
7544400 Bimesogenic compounds and flexoelectric devices  
The invention relates to bimesogenic compounds of formula (I): R1-MG1-X1-Sp-X2-MG2-R2 wherein R1, R2, MG1, MG2, X1, X2 and Sp have the meaning given in claim 1, to the use of bimesogenic compounds...
7297822 1-bromo-4-(4′-bromophenoxy)-2-pentadecyl benzene and preparation thereof  
The present invention relates to novel brominated phenoxy compounds and to process for their preparation. More particularly, the present invention relates to synthesis of novel dibromodiphenyl...
7276633 Method for production naphthalene derivatives  
The present invention relates to a process for the preparation of a compound of the general formula R-(A1-Z-)mB—CF2O-A2-(A3)n—R′ (I) in which R is alkyl, in which one or more CH2 groups may be re...
6770463 Process for the preparation of chiral isofluoroenes  
There is provided a process for the preparation of a chiral insecticidal and acaricidal compound of formula I. Also provided are intermediate compounds useful in the process of the present invention.
6762329 Diaryl ether condensation reactions  
One aspect of the present invention relates to novel reaction conditions that allow the efficient synthesis of diaryl ethers from arenes bearing a leaving group and arenols under relatively mild...
6706930 Process for the preparation of halogenated hydroxydiphenyl compounds  
There is described a process for the preparation of halogenated hydroxydiphenyl compounds of formula (1) by acylation of a halogenated benzene compound (first stage), etherification of the acylated...
6610890 Aldose reductase inhibitors and pharmaceutical compositions  
Medicaments for treating diabetic complications contain a compound of formula (A), wherein at least one Y or one Y′ is OH, and the remainder are selected from H, Hal, OH, OMe and NO2; X is O, S, k...
6465687 Thyroid receptor ligands and method  
Novel thyroid receptor ligands are provided which have the general formula (I) where R1 is alkyl of 1 to 4 carbons or cycloalkyl of 3 to 7 carbons; R2 and R3 are the same or different and are...
6342642 1,4-diaryl-2-fluoro-1-buten-3-ol compounds and their use in the preparation of 1,4-diaryl-2-fluoro-1,3-butadiene and 1,4-diaryl-2-fluoro-2-butene compounds  
The present invention provides novel 1,4-diaryl-2-fluoro-1-buten-3-ol compounds of the structural formula I a method for the preparation of those formula I compounds, and the use of those formula I...
6288011 1,4-diaryl-2,3-difluoro-2-butene insecticidal and acaricidal agents  
Pesticidal 1,4-diaryl-2,3-difluoro-2-butene compounds having the structural formula I ##STR1##and compositions and methods comprising those compounds for the control of insect and acarid pests.
6215029 Process for the preparation of halogenated hydroxydiphenyl compounds  
A process for the preparation of halohydroxydiphenyl compounds useful for protecting organic materials and articles from microorganisms, of the formula ##STR1##by acylation of a halogenated benzene...
6198008 Process for the preparation of 5-bromo-2-fluorobenzeneboronic acid  
A process is disclosed for the preparation of 5-bromo-2-fluorobenzeneboronic acid, which is useful as an intermediate in the preparation of a non-ester pyrethroid compound. The compound can be, for...
RE37087 Insecticidal triffluormethyl alkane derivatives  
There are provided new alkane and alkoxyalkane derivatives of the general formula I ##STR1##in which R1, R2, R3, R4 and A have the meanings given in the description, processes for their preparation...
6166272 Molybdenum trioxide catalyzed fluorination reactions  
Disclosed is a method of fluorinating a substrate having the general formula ##STR1## where each R is independently selected from halogen, alkyl from C1 to C12, aryl from C6 to C12, alkoxide from...
6133483 Process for the production of 2,4,4'-trichloro-2'-methoxydiphenyl ether  
A process is disclosed for the synthesis of 2,4,4'-trichloro-2'-methoxydiphenyl ether, and it's precursor 2,4,4'-trichloro-2'-bromodiphenyl ether, a novel compound.
5892131 Process for the preparation of pesticidal fluoroolefin compounds  
A process and intermediate compounds for the preparation of fluoroolefin compounds which are useful as pesticidal agents.
5861540 Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes for their synthesis  
Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2 -trifluoroethane, (2)...
5698702 Intermediate compound for use in production of dihalopropene compound  
There is disclosed a dihalopropene compound of the formula I: ##STR1## wherein l is an integer of 1 to 5; m is an integer of 1 to 4; R1 's and R2 's are the same or different and are independently...
5552549 Process for the dechlorination of chlorinated aromatic compounds  
Chlorinated aromatic compounds are dechlorinated in a simple and inexpensive manner by heating them to 300° to 450° C. in a salt melt in the presence of water and/or water vapor and carbon.
5498803 Poly(arylene ether)s containing pendent ethynyl groups  
Poly(arylene ether)s containing pendent ethynyl and substituted ethynyl groups and poly(arylene ether) copolymers containing pendent ethynyl and substituted ethynyl groups are readily prepared from...
5426234 Phenylethynyl terminated reactive oligomer  
A composition of matter having the general structure: ##STR1## (wherein X is F, Cl, or NO2, and Y is CO, SO2 or C(CF3)2) is employed to terminate a nucleophilic reagent, resulting in the exclusive...
5382686 Process for preparing nitrodiphenyl (thio) ethers  
Nitrodiphenyl(thio) ethers in which the nitro group is in the ortho- or para-position with respect to the ether oxygen or ether sulphur can be prepared from halonitrobenzones in which the nitro...
5352844 Isolation of partially brominated diphenyl ether mixtures in crystalline form with higher melting range  
This invention relates to a process for isolation of partially brominated diphenyl ether mixtures ("Octabrom") having an average bromine content of 7.2-8.5. The process comprises: (i) adding a C1...
5302760 Stability additive for perfluoropolyalkylethers  
Stability enhancing additives of the formula: ##STR1## where Rf is a perfluoroalkyl group having 1 to 15 carbon atoms and n has a value of 1 to 6, for perfluoropolyalkylether fluids. These...
5283371 Intermediates useful in the production of pesticides  
A process for the production of a boronic acid of formula III, ##STR1## in which an organometallic of formula IV, ##STR2## in which formula IV, M represents a metallic moiety such as --MgX, X being...
5243087 Pyridine derivatives, their production processes and their compositions for the control of insect pests  
A pyridine derivative of the formula: ##STR1## wherein R1 is, the same or different, each a hydrogen atom, a halogen atom, a C1 -C4 alkyl group, a C1 -C4 haloalkyl group, a C1 -C3 alkoxy group, a...
5242996 Modified epoxy resins having acetylenically unsaturated functions  
A modified epoxy resin or compound of the formula: ##STR1## wherein A is the backbone reside of a glycidyl ether epoxy resin with removal of the glycidyloxy groups; R1 and R2 are independently a...
5225436 Aryl substituted naphthalene derivatives  
Certain aryl substituted naphthalene, benzoxepine, benzazepine and henzocycloheptene derivatives are disclosed. The compounds are useful in treating hyperproliferative skin disease, allergic...
5223536 1,4-diaryl-1-cyclopropyl-4-substituted butanes as insecticides and acaricides  
The 1,4-diaryl-1-cyclopropyl-4-substituted butane pesticides of the following formula are effective as insecticides and acaricides: ##STR1## in which X and Y are independently hydrogen, halogen,...
5210321 Diphenyl oxide bromination process  
A process for producing a mixture of brominated diphenyl oxides with an average bromine number of 7.0 to 7.8 is improved by the utilization of a multi-step, multi-catalyst procedure. The process...
5136107 Process for halogenating aromatic compounds  
A process for producing a mixture of ar-brominated polyphenyl compounds with an average of from about 3 to about 4 bromine atoms per aromatic ring utilizing a novel catalytic system for at least a...
5117002 Preparation of diphenyl ether  
A process for the production of diaryl ethers which comprises heating, to a temperature of 80° C. to 220° C., a compound of the formula ##STR1## wherein X and Y are selected from the group c...
5110983 Hexafluoroisopropyl-containing monomers, process for their preparation and their use  
Compounds of the formula I ##STR1## can be prepared by various process steps from 2-(4-methylphenyl)-2-hexafluoroisopropanol.Hexafluoroisoprop yl-containing monomers are important starting...
5081273 Process for the preparation of insecticidally active diphenyl ether compounds  
This invention relates to a process for the preparation of insecticidally active compounds and to novel styrene derivatives useful as intermediates therein.
5081316 Melting point enhancement of partially brominated diphenyl oxide mixtures  
This invention relates to a process for increasing the melting point of partially brominated diphenyl oxide mixtures having an average bromine content of 7.0 to 8.5. The process comprises: forming...
5077440 Process for the preparation of 3-phenoxybenzylalcohol  
In a process for the preparation of 3-phenoxybenzylalcohol, 3-phenoxytoluene is reacted with dibromodimethylhydantoin in a non-polar solvent, followed by hydrolysis of the products of the first...
5055235 Bromination process  
A process is disclosed for preparing a mixture of brominated, non-condensed ring polyaromatics, which process features multiple bromination temperatures and multiple catalyst additions for...
5000879 Melting point enhancement of partially brominated diphenyl oxide mixtures  
This invention relates to a process for increasing the melting point of partially brominated diphenyl oxide mixtures having an average bromine content of 7.2 to 7.7. The process comprises: forming...
4992593 Partially fluorinated diphenyl ethers, processes for their preparation and their use  
A compound of the formula ##STR1## in which independently of one another R is equal to OH or lower alkyl having 1 to 4 carbon atoms, R' is equal to hydrogen or lower alkyl having 1 to 4 carbon...
4990621 Certain propene derivatives as intermediates for the preparation of pesticidal silane derivatives  
New propene derivatives as intermediates for the preparation of pesticidal silane derivatives. Compounds of the formula ##STR1## wherein R4 is H, R5 is a radical of the formula ##STR2## and R17 is...
4918242 Novel optically 1,3-phenoxypropylhalides  
A process for producing the optically pure (+)- or (-)-isomer of a phenyl- or substituted-phenylalkanolamine compounds having pharmacologic activity without the need for resolution processes and...
4911754 Herbicidally active aryloxy saturated 5-membered benzo fused hetero-cyclic compounds  
This invention relates to aryloxy dihydrobenzofuran, oxoindole or benzofuranone derivatives having herbicidal activity and to the use of such compounds to control the growth of noxious plants,...
4894109 Method and apparatus for tacking together the copies of multicopy forms  
A method and apparatus for tacking together multipage forms having pin holes with the use of adhesive tacking tape.
4871882 Process for the preparation of decabromodiphenyl ether with improved thermal stability  
A process for the preparation of Decabromodiphenyl ether is disclosed, which employs dibromomethane as the reaction medium, at temperatures not exceeding 80° C.The product obtained by the process ...
4864027 Silane derivatives  
The compounds of the formula (I) ##STR1## in which X denotes CH2, O, S or NR6, R1 denotes alkyl, cycloalkyl, alkenyl, (substituted) phenyl, or (substituted) naphthyl, R2 and R3 denote alkyl,...
4859747 Perfluorination of ethers in the presence of hydrogen fluoride scavengers  
The direct fluorination of ethers in the presence of hydrogen fluoride (HF) scavengers such as sodium fluoride and potassium fluoride is disclosed. Ethers (liquid or solid) are either mixed with...
4849547 Method for the preparation of decabromodiphenyl ether  
A process for the preparation of decabromodiphenyl ether by the reaction of diphenyl ether or of a partially brominated derivative thereof, in a mixture of halogenated organic solvents is...
4847428 Purification of halogenated aromatic compounds  
A process for recrystallization of a brominated aromatic compound under pressure for purifying it from the contamination by bromine and hydrogen bromide, comprising the steps of: placing the...
4835322 Process for producing 4,4'-dibromodiphenyl ether  
4,4'-dibromodiphenyl ether may be obtained in high yield and purity by the uncatalyzed "neat" bromination of diphenyl oxide, followed by methanol digestion.
Matches 1 - 50 out of 172 1 2 3 4 >