Patents in Class 540/533

Matches 1 - 50 out of 56

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Match	Document	Document Title
1	7399855	Synthesis of caprolactam from lysine In various embodiments, the present invention can involve a method of synthesizing α-amino-ε-caprolactam. The method can comprise heating a salt of L-lysine in a solvent comprising an alcohol. In...
2	7015320	Process for the manufacture of optically active 3-substituted lactams by asymmetric hydrogenation of 3-alkylidenelactams The present invention relates generally to processes for the efficient production optically active 3-substituted lactams of formula (I) process, comprising: contacting a compound of formula...
3	6673920	Method for the production of N-alkenyl-amides A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises...
4	6624303	Method for producing N-alkenyl amides A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises...
5	6521613	Lactam compounds for penetration enhancement Compounds, compositions and methods are disclosed useful for enhancing penetration of a pharmacologically active substances across skin or tissue membranes. Compounds for use in such compositions...
6	6417353	Preparing amines Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and...
7	6355794	Lactam derivatives for melamine impregnating resins, and resin mixtures containing them N-Alkoxymethylactams are obtained by reacting lactams with formaldehyde and hydroxyl-containing compounds selected from diol monoethers. The substituted lactams are useful as an additive to melamne...
8	6255479	Process for the preparation of α-oxolactams A method for preparing an α-oxolactam comprising, reacting a corresponding α-diazolactam with an oxygen donor, in the presence of a transition metal catalyst, to yield the corresponding...
9	6011153	Process for the preparation of a mixture of ε-caprolactam, 6-aminocaproic acid and 6-aminocaproic amide Process for the preparation of a mixture of ε-caprolactam, 6-aminocaproic acid and 6-aminocaproic amide by heating an aqueous mixture containing ammonia and oligomers of 6-aminocaproic acid and/or...
10	5986092	Process for the preparation of N-substituted lactams The invention relates to a process for the preparation of N-substituted lactams by reaction of a lactam, which is unsubstituted on the nitrogen, with an organic halide in the presence of at least...
11	5912189	Compositions containing reaction product of a cyclic compound containing both a nitrogen atom and a carbonyl group, an aldehyde or ketone, and an etheramine The present invention is directed to a composition containing the reaction product of: (A) a cyclic compound containing a 5, 6, or 7-member ring, the ring containing at least one nitrogen and at...
12	5677444	Method for the preparation of β-ketothioamide compound A novel and simple method is proposed for the synthetic preparation of an N,N-disubstituted β-ketothioamide compound represented by the general formula R 1 R 2 N--CS--CH 2 --CO--R 3 , in...
13	5670639	Preparation of n-vinyllactams N-Vinyllactams of the general formula I ##STR1## where n is from 1 to 3, are prepared by a process which comprises reaction of a lactam of the general formula II ##STR2## where n is from 1 to 3,...
14	5508396	Process for preparing n-alkyllactams A process for preparing an N-alkyllactam, comprising the steps of: (a) reacting a lactam with an alkali metal alkoxide at 130°-170° C. and removing the alcohol formed by distillation; (b)...
15	5470849	γ-turn peptidomimetics as fibrinogen antagonists This invention relates to a method of inhibiting platelet aggregation, and compounds which are mimics of the peptide sequence Arg-Gly-Asp.
16	5276165	Preparation of N-substituted lactams A process for the preparation of N-substituted lactams of the formula I ##STR1## where Z is C 2 - to C 10 -alkylene, C 7 - to C 12 -aralkylene, phenylene or naphthylene, and R 1 is C 1 -...
17	5124322	Dipeptide collagenase inhibitors Novel compounds of formula (I), salts, solvates and hydrates thereof: ##STR1## in which: R 1 and R 2 are independently hydrogen; alkyl; alkoxy; halogen; or CF 3 ; R 3 is hydrogen; acyl, such...
18	4990628	Catalytic preparation of thiolactams The reaction of lactams (preferably N-methyl-2-pyrrolidone) with hydrogen sulfide to thiolactams (preferably N-methyl-2-thiopyrrolidone) is conducted in the presence of a catalyst comprising an...
19	4973688	Process for the production of 1-n-dodecylazacycloheptan-2-one There is disclosed a method for the production of 1-n-dodecylazacycloheptan-2-one by reacting caprolactam with 1-bromododecane in the presence of a phase transfer catalyst under anhydrous...
20	4943633	Catalytic preparation of cyanoalkyl lactams This invention relates to an improved process for the preparation of cyanoalkyl lactams by the reaction of an unsaturated nitrile with a lactam, said cyanoalkyl lactam of the formula ##STR1##...
21	RE33073	Obtaining caprolactam by cleaving oligomers of caprolactam Caprolactam is obtained by cleaving oligomers of caprolactam by a process in which the oligomers, in a liquid or solid state, are introduced into a fluidized alumina bed and cleaved at from 290°...
22	4812566	Process for preparing 1-dodecylazacycloheptane-2-one Disclosed is a process for preparing 1-dodecylazacyclo-heptane-2-one, the process comprising reacting azacylcloheptane-2-one with dodecyl halide in a substantially non-aqueous system in the...
23	4692523	Process for the preparation of 1-substituted aza-cycloalkan-2-ones A process for the preparation of 1-substituted azacycloalkan-2-ones of the formula I ##STR1## in which R, m and n have the meanings indicated by reaction of corresponding...
24	4620949	Process for amidocarbonylation of cyclic amides Amino acid derivatives are synthesized by reacting paraformaldehyde, cyclic amides and synthesis gas with a bimetallic catalyst comprising a rhodium-containing compound and a cobalt-containing...
25	4508646	Process for the preparation of a catalyst useful for anionic lactam polymerization An improved process for the preparation of a lactam-magnesium compound which involves bringing into intimate admixture a lactam monomer represented by the following structural formula: ##STR1##...
26	4422970	Method of synthesis of 1-dodecylazacycloheptan-2-one In a method of synthesis of 1-substituted azacycloalkan-2-ones with primary alkyl halides and aralkyl halides as alkylating agents, the improvement comprising carrying out the N-alkylation in the...
27	4360461	Process for obtaining caprolactam by cleaving caprolactam oligomers In a process for obtaining caprolactam by cleaving caprolactam oligomers by passing them through an alumina catalyst bed at an elevated temperature, the improvement that the oligomers are...
28	4296029	Process for preparing hexahydroazepine, piperidine and pyrrolidine derivatives 2-Oxo-hexahydroazepine, -piperidine or pyrrolidines of formula ##STR1## wherein n is 2,3 or 4, R is hydrogen, lower alkyl, aryl(lower)alkyl, loweralkenylmethyl or cycloalkylmethyl, R 1 is hydrogen...
29	4264503	Polymerization process using a sodium carboxylactamate catalyst The polymerization of 2-pyrrolidone is achieved in high yield in the presence of a sodium-derived catalyst activator produced by the reaction of carbon dioxide with the sodium lactamate derived...
30	4234484	Process for the preparation of cyclic enamides Special cyclic enamides are prepared by splitting off alcohols catalytically from the corresponding alkoxylated cyclic amides, in the presence of at least one tetraalkylammonium and/or alkali metal...
31	4145352	Preparation of thioamides from amides A method for preparing thioamides from amides by contacting an amide with a source of sulfur in the presence of a sulfactive catalyst. In a preferred embodiment the sulfactive catalysts are...
32	3939153	Process for producing caprolactam A non-catalytic method is provided for depolymerizing nylon-6 to produce e-caprolactam. The nylon, as a melt is continuously fed to a reaction zone together with superheated steam and undecomposed...
33	3869431	POLYAMIDES AND THEIR PRODUCTION Polyamides are produced by reacting a nitro acid chloride with a lactam the product of which is reduced to the corresponding amino-imide and then heated to split off lactam and obtain a polyamide...
34	3865814	Process for preparing n-substituted lactams A process for the preparation of N-substituted lactams of the formula ##SPC1## Wherein A is a substituted or unsubstituted aliphatic hydrocarbon chain having 3 to 11 carbon atoms, said substituents...
35	3843630	PRODUCTION OF ε-CAPROLACTAM The present invention relates to a process for producing ε-caprolactam which comprises bringing N-acetyl-ε-caprolactam into contact in a gaseous phase with an acid catalyst or basic catalyst in...
36	3674751	METHOD OF MANUFACTURING POLYAMIDES BY ALKALINE POLYMERIZATION OF CYCLIC LACTAMS An improved process for manufacturing polyamides by alkaline polymerization of cyclic lactams which consists of reacting alkali metal hydroxides or alcoholates with the lactams, with water or the...
37	3536699	ARALKYL-SUBSTITUTED LACTAMS AND CYCLIC UREAS AND PROCESS FOR THEIR PRODUCTION
38	3531471	PROCESS FOR PREPARING N-VINYL COMPOUNDS
39	3377340	Process for preparing n-vinyl amides and n-vinyl lactams
40	3346566	Process of preparing metal salts of lactams
41	3332938	Alkylated lactams and process of preparation
42	3329668	Chlorothiocarbanilide complexes
43	3324177	N-vinylamides and process for preparing them
44	3318906	Process for the production of ethylenylated lactams
45	3317519	Simultaneous depolymerization of polycaproamide and polyester with recovery of caprolactam
46	3306910	Production of thiolactam compounds
47	3300513	2-acyl-2-azabicyclo [3.2.2]-6-nonenes
48	3259634	2-azabicyclo[3.2.0]heptan-3-ones
49	3249625	Process for preparing nu-vinyl pyrrolidone-2
50	3249590	Anionic polymerization of lactams with pyrimidines or pyrazines as activators

Matches 1 - 50 out of 56

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