| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 546244000 | Nitrogen attached directly to the piperidine ring by nonionic bonding | 14 |
| 20080306273 | Process for the Preparation of 1-Aminopiperidine Derivatives - The present invention relates to a process for the preparation of compounds of the general formula (I). | 12-11-2008 |
| 20080306274 | METHOD FOR PREPARING N-AMINOPIPERIDINE AND ITS SALTS - The invention concerns a novel method for preparing N-aminopiperidine of formula (I): | 12-11-2008 |
| 20080319197 | Crystalline Form of Remifentanil Hydrochloride - The present invention relates to a crystalline polymorphic form of remifentanil hydrochloride. The invention also describes methods of preparing a polymorphic form of remifentanil hydrochloride. | 12-25-2008 |
| 20090131674 | POLYMIDE OLIGOMERS AND THEIR USE - The present invention relates to polyamide oligomers with linear or branched chain structure with a number average molar mass of 800 to 5000 g/mol, with basic end groups which are at least partially NH | 05-21-2009 |
| 20090209766 | PROCESS FOR THE PREPARATION OF 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE - 4-amino-2,2,6,6-tetramethylpiperidine is prepared by reacting 2,2,6,6-tetramethylpiperidine-4-one with ammonia and hydrogen in the presence of nickel and/or cobalt catalyst and water. The main reaction is carried out at a pressure of at most 50 bar and a temperature of at most 120° C. up to a conversion of the 2,2,6,6-tetramethylpiperidine-4-one of at least 80%. Then, an after-reaction takes place at a higher temperature and at a higher pressure compared to the pressure and temperature of the main reaction. | 08-20-2009 |
| 20100016601 | PROCESS FOR PREPARING REMIFENTANIL, INTERMEDIATES THEREOF, USE OF SAID INTERMEDIATES AND PROCESSES FOR THE PREPARATION THEREOF - A process for preparing remifentanil by conversion of the nitrile group of a cyanopiperidinyl propanoate derivative to an ester group. Advantageously, with this process the number of steps for preparing remifentanil from commercial products is significantly reduced, compared to the processes known in the art. | 01-21-2010 |
| 20100099880 | Alternate Process for Remifentanil Preparation - An alternate process for synthesizing opiate or opioid analgesics and anesthetics, and intermediates thereof is provided. In particular, a process of synthesizing synthetic opiate or opioid compounds such as, for example, remifentanil, carfentanil, sufentanil, fentanyl, and alfentanil are disclosed. | 04-22-2010 |
| 20100105917 | METHOD FOR PRODUCING OPTICALLY ACTIVE 3-AMINOPIPERIDINE OR SALT THEREOF - The present invention relates to a method for producing an optically active 3-aminopiperidine or salt thereof. In the method, a racemic nipecotamide is stereoselectively hydrolyzed to obtain an optically active nipecotamide and an optically active nipecotic acid in the presence of an enzyme source derived from an organism, and then the optically active nipecotamide is derived into an optically active aminopiperidine or salt thereof by aroylation, Hofmann rearrangement, deprotection of the amino group and further deprotection; or the optically active nipecotamide is derived into an optically active aminopiperidine or salt thereof by selective protection with BOC, Hofmann rearrangement and further deprotection. It is possible by the present invention to produce an optically active 3-aminopiperidine or salt thereof useful as a pharmaceutical intermediate from an inexpensive and easily available starting material by easy method applicable to industrial manufacturing. | 04-29-2010 |
| 20100197928 | METHOD FOR PREPARING DISUBSTITUTED PIPERIDINE AND INTERMEDIATES - The disclosure relates to a method for preparing a compound of formula (I), wherein P | 08-05-2010 |
| 20100331546 | METHOD FOR OPTICAL RESOLUTION OF ALKYL PIPERIDIN-3-YL CARBAMATE AND INTERMEDIATE THEREFOR - Disclosed is a method for optical resolution of an alkylpiperidin-3-yl carbamate, the method including bringing an RS mixture of an alkylpiperidin-3-yl carbamate into contact with an optically active tartaric acid in the presence of a solvent. | 12-30-2010 |
| 20120296094 | AMIDE COMPOUND OR SALT THEREOF, AND BIOFILM INHIBITOR, BIOFILM REMOVER AND DISINFECTANT CONTAINING THE SAME - The present invention provides a new amide compound and salt thereof that is capable of inhibiting biofilm formation or removing deposited biofilms. The present invention also provides a biofilm formation inhibitor or a biofilm remover containing the amide compound or salt thereof as an active ingredient. | 11-22-2012 |
| 20130012712 | METHOD FOR PREPARING DISUBSTITUTED PIPERIDINE AND INTERMEDIATES - The disclosure relates to a method for preparing a compound of formula (I), | 01-10-2013 |
| 20130281702 | Methods For Preparing Fentanyl And Fentanyl Intermediates - A method and an intermediate are provided for preparing fentanyl. Aniline and 1-phenylethyl-4-piperidone are reacted with a borane complex, in a lower C | 10-24-2013 |
| 20150065718 | METHOD OF MAKING A TEMPLATING AGENT - A method for preparing 1-adamantyltrimethylammonium methylcarbonate or N,N-dimethyl-3,5-dimethylpiperidinium methylcarbonate is disclosed. The method comprises reacting dimethyl carbonate and 3,5-dimethylpiperidine or a 1-adamantylamine compound and in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. The 1-adamantylamine compound is 1-adamantylamine, 1-adamantylmethylamine, or mixtures thereof. | 03-05-2015 |
