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| Number | Title | Issue Date |
| 7329780 | Method of preparing optically pure phenethylamine derivatives Provided is a method of preparing an optically pure compound having formula 1 or its salts. The method includes: reacting (R)-2-(4-methoxy-3-aminosulfonyl-phenyl)-1 -methylethylamine or its salts with a compound selected from the group consisting of chloroacetic aci... | 02/12/2008 |
| 6927290 | Production of mixed acid anhydride and amide compound There is disclosed an advantageous mixed acid anhydride production method of formula (1): R1C(O)OY(O)n(R2)p (1) wherein R1, R2 and Y denote the same as defined below, n and p ... | 08/09/2005 |
| 6350909 | Methoxymino-phenylacetamide derivatives and their utilization as pesticides The invention relates to new imides, to a plurality of processes for their preparation and to their use as fungicides.... | 02/26/2002 |
| 6166243 | Process for the preparation of insecticidal phenylhydrazine derivatives Disclosed herein is a method for making compounds having the structural formulae (I) or (II): ##STR1## wherein: X is a) phenyl; lower phenylalkoxy; phenoxy; or benzyl; or b) one substituent from group a) and one or more substituents selected from ... | 12/26/2000 |
| 6121326 | Substituted alkyltetraamine derivatives Compounds which are useful as a tachykinin antagonist are substituted alkyltetraamine derivatives which are represented by the following formula (I) or a pharmaceutically acceptable salt, a complex compound or a solvate thereof. ##STR1## wherein... | 09/19/2000 |
| 6001881 | Ortho-substituted benzoylguanidines, a process for their preparation, their use as a medicament or diagnostic agent, and a medicament comprising them Benzoylguanidines of the formula I ##STR1## in which: R(1) to R(4) have the meanings given in the claims, are antiarrhythmic pharmaceuticals, having a cardioprotective component, which are also valuable for the prevention of ischemically induced dama... | 12/14/1999 |
| 5929281 | Process for producing heterocyclic aromatic amine or arylamine A heterocyclic aromatic halide or an aryl halide is reacted with an amine compound in the presence of a base to give a heterocyclic aromatic amine or an arylamine, respectively. In this reaction, a catalyst comprising a palladium compound and a tertiary p... | 07/27/1999 |
| 5892112 | Process for preparing synthetic matrix metalloprotease inhibitors Synthetic mammalian matrix metalloprotease inhibitors are disclosed that are useful for treating or preventing diseases wherein said diseases are caused by unwanted mammalian matrix metalloprotease activity and include skin disorders, keratoconus, resteno... | 04/06/1999 |
| 5783735 | Process for preparing polymeric amides useful as additives in fuels and lubricating oils A process for preparing polymeric amides is disclosed. The process comprises sequentially reacting a hydrocarbon polymer functionalized (e.g., via the Koch reaction) to contain acid, ester, thioacid and/or thioester groups with a heavy polyamine to form a... | 07/21/1998 |
| 5700839 | Alkyl-5-methylsulfonylbenzoylguanidine derivatives Benzoylguanidines of the formula I ##STR1## wherein R1 and R2 have the meanings indicated herein, and their physiologically acceptable salts, show anti-arrhythmic properties and act as inhibitors of the cellular NA+ /... | 12/23/1997 |
| 5648535 | Process for preparing acyl aminophenols A process for the production of N-acylaminophenols by the concurrent hydrogenation of a nitrophenol to an aminophenol and the acylation of the aminophenol with acyl anhydride takes place on a continuous basis in a stirred tank reactor in which liquid prod... | 07/15/1997 |
| 5606098 | Amides and esters of perfluoropolyoxaalkylene-sulfo- or perfluoropolyoxaalkylene-carboxylic acids and a process for producing same Amides and esters of perfluoropolyoxaalkylene-sulfo- or perfluoropolyoxaalkylene-carboxylic acids of the general following formula: RF RFI ZQ, where RF =CF3 O--, C2 F5 O--, C3 | 02/25/1997 |
| 5492545 | Multifunctional additives to improve the low-temperature properties of distillate fuels and compositions thereof Additives which improve the low-temperature properties of distillate fuels are the reaction products of (1) diols, and (2) the product of pyromellitic dianhydride and combinations of two or more different aminoalcohols with long-chain hydrocarbyl groups a... | 02/20/1996 |
| 5399760 | Color control & stability in acetaminophen A method is provided for purifying crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a solution of the crude APAP; and b) subsequently contacting the solution with substoichiometric quant... | 03/21/1995 |
| 5344979 | Process for preparing color-stabilized acetaminophen A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a wet crude APAP; and b) subsequently drying said crude APAP in the presence of a sufficient amount ... | 09/06/1994 |
| 5288906 | Preparation of p-aminophenols Optionally substituted p-aminophenol compounds, easily converted into the N-acylated derivatives thereof, are prepared by hydrogenating the corresponding nitrobenzene, in solution in a saturated aliphatic monocarboxylic acid, notably acetic acid, in the p... | 02/22/1994 |
| 5239048 | Aromatic polyoxyalkylene amidoamines Block polyamido polyamine condensation products of an aromatic polycarboxylic acid component with a polyoxyalkylene polyamine component prepared by reacting the polycarboxylic acid component with an amount of the polyoxyalkylene polyamine component suffic... | 08/24/1993 |
| 5220063 | Method for the preparation of arylalkanolacylamides Acylamides or amine acylate salts of arylalkanolamines are prepared by reacting an arylisonitrosoalkanone with hydrogen and a carboxylic acid, carboxylic acid anhydride or carboxylic acid ester or mixture thereof in the presence of a transition metal cata... | 06/15/1993 |
| 5206436 | Taped purification process Process for purifying, by crystallization, TAED having a titerࣙ99.5% from a mixture containing crude TAED obtained by acetylation of DAED, wherein the purification process is performed in two different stages (1, 2), characterized in that the temperatur... | 04/27/1993 |
| 5155269 | Purification of p-aminophenol compositions and direct conversion to N-acetyl-p-aminophenol A process for removing impurities from an aqueous feed mixture comprising a reaction solution produced by catalytic hydrogenation of nitrobenzene in an acid aqueous medium. An aqueous feed mixture comprising the reaction solution is contacted with an extr... | 10/13/1992 |
| 5128441 | Block polyamido condensation products A block polyamido primary amine condensation product prepared by reacting a defined polyoxyalkylene polyamine having terminal primary amine groups with an amount of a defined dicarboxylic acid or an anhydride or a C1 to C4 alkyl este... | 07/07/1992 |
| 5105009 | Intermediates for the preparation of 1-(phenyl)-1-hydroxy-2-amino-3-fluoropropane derivatives Intermediates of Formula ##STR1## where R is a methylthio, methylsulfoxy, methylsulfonyl or a nitro group; and X1 is hydrogen, 1-6 C alkyl, 1-6 C haloalkyl, 3-6 C cycloalkyl, phenyl or phenylalkyl(1-6C), where the phenyl ring may be substituted by on... | 04/14/1992 |
| 5101012 | Compositions and polymer fabrics treated with the same This invention relates to a composition prepared by reacting (a) at least one reaction product of a hydrocarbyl substituted carboxylic acid or anhydride having a hydrocarbyl group containing from about 8 to about 150 carbon atoms and at least one polyamine whe... | 03/31/1992 |
| 5091572 | Amine terminated polyamides Liquid amine terminated polyamide addition products having an average molecular weight of about 3,000 to about 10,000 are prepared by the non-catalytic reaction of a dicarboxylic acid having a molecular weight within the range of about 130 to about 700 wi... | 02/25/1992 |
| 5047586 | Process for the preparation of 4-acylamino-2-aminoalkoxybenzenes A process for the preparation of 4-acylamino-2-aminoalkoxybenzenes of the general formula (1) ##STR1## in which R denotes an alkyl-C1 -C6 - or alkoxy-C1 -C4 -alkylene-C1 -C4 group and ... | 09/10/1991 |
| 5039306 | Multifunctional additives to improve the low-temperature properties of distillate fuels and compositions thereof Additives which improve the low-temperature properties of distillate fuels are the reaction products of (1) diols, and (2) the product of pyromellitic dianhydride and aminoalcohols and/or amines with long-chain hydrocarbyl groups attached.... | 08/13/1991 |
| 5039309 | Multifunctions additives to improve the low-temperature properties of distillate fuels and compositions thereof Additives comprising the reaction products of aminodiols and the product of pyromellitic dianhydride and aminoalcohols and/or amines with long-chain hydrocarbyl groups improve the low-temperature properties of distillate fuels.... | 08/13/1991 |
| 5002588 | Multifunctional fuel additives Additive reaction products of (1) hydrocarbyl diols, and (2) the product of benzophenone tetracarboxylic dianhydride and hydrocarbyl aminoalcohols and/or amines improve the low-temperature properties of distillate fuels when added thereto.... | 03/26/1991 |
| 5002589 | Multifunctional fuel additives and compositions thereof Additives which improve the low-temperature properties of distillate fuels are the reaction products of (1) diaminodiols, and (2) the product of pyromellitic dianhydride and aminoalcohols and/or amines with long-chain hydrocarbyl groups attached.... | 03/26/1991 |
| 5000758 | Multifunctional fuel additives derived from aminodiols to improve the low-temperature properties of distillate fuels Additives comprising the reaction products of aminodiols and the products of benzophenone tetracarboxylic dianhydride and aminoalcohols and/or amines with long-chain hydrocarbyl groups attached improve the low-temperature properties of distillate fuels.... | 03/19/1991 |
| 4990671 | Method for making aminophenols and their amide derivatives N-acylated dialkylaminophenols are produced at greater yields under mild reaction conditions by a novel in situ process which begins with catalytic hydrogenation of dialkylnitrosophenols in an aprotic organic reaction medium.... | 02/05/1991 |
| 4898977 | Processes for the preparation of 5-amino-4-hydroxyvaleric acid derivatives The invention relates to novel processes and intermediates for the preparation of 5-amino-4-hydroxyvaleric acid derivatives of the formula ##STR1## in which R1 represents hydrogen, optionally substituted alkyl, cycloalkyl, cycloalkyl-lower... | 02/06/1990 |
| 4780542 | Process for the synthesis of esters and amides of carboxylic acids The invention relates to the preparation of an ester or an amide from an anhydride with an alcohol or an amine, wherein the anhydride is first prepared by reacting an acid and an alkyl chloroformate in a 100% aqueous medium, that is, 100% water.... | 10/25/1988 |
| 4744798 | Benzophenone derivatives as fuel additives Benzophenone derivatives, e.g., benzophenone tetracarboxylic dianhydride, and esters or mixtures thereof when reacted with various hydrocarbyl amines provide additives that are highly useful as fuel detergents, intake valve and exhaust gas valve deposit r... | 05/17/1988 |
| 4670589 | Preparation of N-acetyl-p-aminophenol Production of N-acetyl-p-aminophenol by hydrogenation of p-nitrophenol to p-aminophenol and concurrently acetylating the p-aminophenol with acetic anhydride with the acetylation controlled so that substantially no excess acetic anhydride is present in the... | 06/02/1987 |
| 4658054 | Process for the preparation of 5,6-dialkoxyanthranilic acids A process for the preparation of 5,6-dialkoxyanthranilic acids is described. The 5,6-dialkoxyanthranilic acids are useful in the preparation of substituted quinazolinediones which are active cardiotonic agents.... | 04/14/1987 |
| 4499283 | Process for preparing 1-substituted-6-n-propyl-8-methylimidazo[1,5-d]-as-triazin-4-(3H)-ones This disclosure describes a novel process for the preparation of 2-(n-propyl)-4-methyl-5-(lower alkanoyl)imidazoles which are useful as intermediates for the preparation of anti-asthmatic agents.... | 02/12/1985 |
| 4480125 | Itaconamide compounds and method of preparation The present invention relates to itaconamide compounds of the formula ##STR1## wherein R is hydrogen, alkyl, aryl, alkaryl, or aralkyl and to a method of preparing the subject compounds which comprises preparing a mixed anhydride of 2-methylenesuccin... | 10/30/1984 |
| 4394314 | Process of preparing aromatic aldehydes by reacting selected aromatic compounds with formamidine acetate and an organic acid anhydride A process of reacting a ring carbon atom of an aromatic compound Ar with a compound of the formula H2 NCH.dbd.NH2+ CH3 CO2-, and an anhydride which has the ##STR1## at from 10° to 200... | 07/19/1983 |
| 4379928 | Synthesis of amides Alkyl amides have been synthesized from cyclic anhydrides, carboxyl acids and their esters by contacting them with an amine carbamic acid salt.... | 04/12/1983 |
