Abstract:
A process has been developed for the preparation of mixtures of dinitroanthraquinones with a high content of 1,5- and 1,8- dinitroanthraquinone by nitration with nitric acid in the presence of sulphuric acid with heating wherein anthraquinone, 1-nitroanthraquinone or a mixture of them is treated with about 1.5 to about 2.5 times the amount by weight of nitric acid, relative to the feed material, in the presence of about 0.75 times to twice the amount by weight, relative to nitric acid, of sulphuric acid, the temperature first being kept in the range from room temperature to about 50.degree. C. until at least 50% of the starting material or materials has been dinitrated, then adjusting the temperature to about 50.degree. C. to about 70.degree. C. to complete the dinitration.
Abstract:
A phenoxycarboxylic acid derivative having the formula ##STR1## wherein R represents ##STR2## and X.sub.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, trifluoromethyl group, nitro group or cyano group and X.sub.2 represents a hydrogen atom, a halogen atom, a lower alkyl group, nitro group or cyano group, R' represents ##STR3## and R.sub.1 and R.sub.2 are the same and different and respectively represent hydrogen atom or a lower alkyl group, is produced by reacting a phenol compound having the formula ##STR4## with a halogen compound havingX--R'wherein X represents a halogen atom in the presence of a base. The reaction is carried out in the presence of a quarternary ammonium salt or a quaternary phosphonium salt in a nonpolar solvent.
Abstract:
3-Benzoyl-2-nitrophenylacetic acids, metal salts, amides and esters are disclosed having the formula: ##STR1## wherein R.sub.1 is hydrogen or lower alkyl; R.sub.2 is OH, OM, O-lower alkyl, NH.sub.2, NH-lower alkyl or N,N-dilower alkyl; X is hydrogen, halogen, lower alkyl, lower alkoxy, trifluoromethyl or nitro and M is a pharmaceutically acceptable cation or a fraction thereof when the cation is multivalent, hydrates thereof and n is 1-3 inclusive. The compounds have anti-inflammatory activity and methods and pharmaceutical compositions for use thereof are disclosed.
Abstract:
A process for the preparation of substituted fluorobenzenes which contain a nitro group or a cyano group and may or may not contain an aliphatic radical or an additional halogen atom, wherein the corresponding substituted chlorobenzene is reacted with potassium fluoride in the presence of a crown ether and a solvent at from 150.degree. to 230.degree. C.
Abstract:
The present invention relates to novel herbicidally active phenoxyphenoxyalkanecarboxylic acid esters, compositions which contain these compounds as active ingredient, and a method of selectively controlling weeds in crops of cultivated plants or of regulating plant growth which comprises the use of these compounds.The phenoxyphenoxyalkanecarboxylic acid esters have the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or cyano,R.sub.2 is hydrogen or lower alkyl,R.sub.3 is a radical OR.sub.4 or SR.sub.5,R.sub.4 is a substituted alkyl radical, an alkenyl, alkynyl, cycloalkyl radical, a substituted or unsubstituted phenyl or benzyl radical or a 5- to 6-membered heterocyclic radical, andR.sub.5 is an unsubstituted alkyl radical or has the same meaning as R.sub.4.
Abstract:
Fluorine substituted phenoxybenzylcarbonyl derivatives of the formula ##STR1## in which R.sup.1 represents hydrogen, cyano or ethynyl andR.sup.2 represents the radical ##STR2## wherein R.sup.3 and R.sup.4, which are identical, each represent chlorine, bromine or methyl, orR.sup.2 represents the radical ##STR3## wherein R.sup.5 represents a phenyl ring which optionally carries one or more substituents each selected independently from halogen, alkyl, alkylthio and alkoxy each with 1-4 carbon atoms, nitro and methylenedioxy,which possess arthropodicidal properties. The benzyl alcohol components of these esters are also new.
Abstract:
A process for the manufacture of indigoid dyes, wherein a functional derivative of the anthranilic acid of the general formula I ##STR1## in which A completes a mono- or polynuclear, substituted or unsubstituted aromatic ring,X represents a hydrogen atom or a protective group for the free amino group which can form an anhydro derivative with the carboxyl group in the ortho-position,Is reacted with nitromethane in the presence of a base or with a salt of nitroacetic acid to give the .omega.-nitro-o-amino-acetophenone derivative of the general formula II ##STR2## in which A and X are as defined in formula I, and this intermediate is condensed by heating with acids to give the indigo compound of the general formula III ##STR3## in which A is as defined in formula I.
Abstract:
There are disclosed ethers and thioethers having a benzyl or phenyl terminal group and another terminal group which is halogenated, and which ethers and thioethers exhibit juvenile hormone activity (i.e., function as inhibitors of the development of insects from their larval state to the adult state), as well as acaricide activity.Methods for preparing the ethers and thioethers are also disclosed.
Abstract:
This invention discloses .alpha.-aryloxy para substituted phenyl acetic acid compounds that are useful in lowering sterol and triglyceride serum levels.
Abstract:
Process for preparation of monomers of the formula ##STR1## wherein R is hydrogen or methyl;X and Y are independently selected from the group consisting of NO.sub.2, halogen, --CN and --CF.sub.3 ; andm and n can range from 0 to 3.Typical monomers embraced by the above formula can be prepared by Lewis Acid catalyzed esterification of methacrylic acid with a diazo derivative of an electron acceptor such as 9-diazo-2,4,7-trinitrofluorenone. These monomers can be used with other binders or polymerized by standard, free-radical techniques to polymers capable of forming self-supporting films which are useful in electrophotographic imaging members and methods.