摘要:
Novel amino-substituted derivatives of 4-t-butylphthalic anhydride are used as monomers to produce novel polyimides with improved solubility characteristics. Increased solubility in organic solvents permits these polyimides to be used in coating applications where structurally similar polyimides could not otherwise be used.
摘要:
Compounds of Formula I or Formula II ##STR1## where A is an electron withdrawing group and B is a secondary or tertiary amino group or the group OD where D is H, aryl or an aliphatic group are made by reacting a corresponding compound of Formula Ia or Formula IIa ##STR2## in a solvent with a reagent selected from organic primary and secondary amines and compounds of the formula MOD where M is an alkali metal and A and D are as defined above. In this process the nitro group and the group B in Formula I and Ia are in the 2- or 4- position and the compounds of Formula I, Ia, II and IIa may optionally be further substituted. Preferably a primary or secondary amine is reacted with a compound of formula Ia, preferably using dimethylformamide as solvent. The process can result in the production of novel compounds, including (1) Compounds of Formula III wherein each group A is CO.sub.2 H or an alkali metal, amine or ammonium salt thereof or the two groups A together form a carboxylic anhydride group and B is in the 2- or 4-position and is OD, where D is hydrogen or an aliphatic group or is a secondary or tertiary amine group, (2) compounds of Formula IV ##STR3## where B is the group OD or the group NR.sub.2 R.sub.3 and wherein at least one of R.sub.1 and D or at least one of R.sub.1, R.sub.2 and R.sub.3 comprise a solubilizing group containing a primary amino, carboxylic, sulphonate or phosphate ester group in the form of an alkali metal, amine or ammonium salt or is a polyalkylene oxide group, the compounds optionally being further substituted.
WHEREIN X REPRESENTS AN ALKYLENE RADICAL HAVING UP TO 4 CARBON ATOMS AND Y IS METHYL, ETHYL, ISOPROPYL, TRIFLUOROMETHYL, ACETYLETHYL, BENZYL, 2'',4''-DICHLOROPHENOXY-METHYL, 2'',4''-DICHLOROPHENOXYETHYL, VINYL, STYRYL, PHENYL, CHLOROPHENYL, TOLYL, OR METHOXYPHENYL.
摘要:
Amide derivatives of 2-(p-aminobenzyl)-butyric acid and esters thereof having a hypolipidemizing and hypocholesterolemizing pharmaceutical activity and their preparation are described.Included are compounds of the formula ##STR1## wherein R and R' together represent the group ##STR2## or the group ##STR3## and R" is hydrogen or a 1 to 6 carbon alkyl group.
摘要:
This disclosure describes the monoalkylaminobenzene multi-carboxylic acids, derivatives and salts thereof useful as hypolipidemic and anti-atherosclerotic agents.
摘要:
This disclosure describes the monoalkylaminobenzene multi-carboxylic acids, derivatives and salts thereof useful as hypolipidemic and anti-atherosclerotic agents.
摘要:
Novel phthalic acid diesters or ester-amides substituted by alkenylamino groups, processes for their preparation and hot-curable mixtures which are stable on storage and contain at least one phthalic acid diester according to the invention or a phthalic acid ester-amide according to the invention and a polyimide which has at least two groupings containing a C.dbd.C double bond are described. These hot-curable mixtures which are stable on storage are distinguished by improved processing characteristics, in particular a prolonged pot life, and are suitable for the production of various mouldings and especially also for the production of complicated castings.
摘要:
Novel products having analgesic and antipyretic activity are provided having the formula:R -- Z -- R'in which each of R and R', which may be the same or different, represents a phenyl or pyridyl radical which is optionally substituted by at least one substituent selected from a halogen atom, --NO.sub.2, --CONH.sub.2 --, --OC.sub.2 H.sub.5, OCH.sub.3, --CH.sub.3, --COOC.sub.2 H.sub.5, --COOCH.sub.3, --COOH and --OCH.sub.2 --COOH radical; Z represents a radical selected from --CH=N-- and >CH--NH-- in which the radical >CH-- of said amino group forms part of a heterocyclic structure of the formula: ##STR1## in which the two carbon atoms connected by a double bond form part of the radical R or R'. Specific compounds include 2-(2'-carboxamido-anilino)-o-phthalide and 2-(2' or 4'-ethoxy-anilino)-o-phthalide.
摘要:
THIS INVENTION DISCLOSES NEW CHEMICAL COMPOSITIONS OF MATTER AND MORE PARTICULARLY NEW COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF
1-X1,2-R1-O-,3-R2-O-N(-CO-R3)-CO-,4-X2-BENZENE
AND THEIR ISOMERIC FORM
1-X1,2-R1-O-,3-R2-O-N=C(-OOC-R3)-,4-X2-BENZENE
WHEREIN X1 AND X2 ARE HALOGEN; R1 AND R2 ARE ALKYL, AND R3 IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKENYL, ALKOXY AND ALKYTHIO. THE COMPOUNDS OF THE ABOVE DESCRIPTION ARE USEFUL AS ACARICIDES.