Patent application number | Description | Published |
20110275828 | PROCESS FOR THE PREPARATION OF IRBESARTAN - The present invention relates to a process for the preparation of 2-butyl-3-[[2′-(1H-tetrazol-5-yl)[1,1′-biphenyl]-4-yl]-1,3-diazaspiro[4,4]non-1-en-4-one by reaction of the corresponding nitrile with sodium azide and piperazine or its acid salt. | 11-10-2011 |
20110275834 | POLYMORPH OF STRONTIUM RANELATE AND A PROCESS FOR ITS PREPARATION - This invention discloses Strontium Ranelate polymorph, designated as Form A, having a characteristic powdered x-ray diffraction pattern and infrared spectrum with a water content of about 1.5 to 2.5% and a process for its preparation. | 11-10-2011 |
20120108848 | PROCESS FOR RESOLUTION OF 1-(3-HYDROXYPHENYL)-2-METHYLAMINO ETHANOL - Resolution of the title compound to its active isomer (R)-1-(3-hydroxyphenyl)-2-methylamino ethanol with (R)-naproxen as a resolving agent. | 05-03-2012 |
20120197022 | PROCESS FOR THE RESOLUTION OF (R,S)-NICOTINE - (R,S)-Nicotine was resolved through diastereomeric salt formation using dibenzoyl-d-tartaric acid and dibenzoyl-l-tartaric acid to obtain enantiomerically pure (S)-nicotine and (R)-nicotine. | 08-02-2012 |
20120197055 | PROCESS FOR ISOMERISATION OF LYCOPENE IN THE PRESENCE OF THIOUREA - The present invention relates to isomerization of Z-lycopene in mixtures of isomers to mixtures enriched with all E-lycopene. | 08-02-2012 |
20120209006 | PROCESS FOR THE PREPARATION OF (R,S)-NICOTINE - A process for (R,S)-nicotine is described. Condensation of 1-(but-1-enyl)pyrrolidin-2-one with nicotinic acid ester gave 1-(but-1-enyl)-3-nicotinoylpyrrolidin-2-one which on treatment with an acid and a base gave myosmine. Myosmine was converted to (R,S)-nicotine by reduction followed by N-methylation. | 08-16-2012 |
20120245379 | PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY PURE tert-LEUCINE - Enantiomerically pure L-tert-leucine and D-tert-leucine were prepared from (DL)-tert-leucine by diastereomeric salt formation using dibenzoyl-d-tartaric acid as the resolving agent. | 09-27-2012 |
20120309973 | PREPARATION OF 2-(4-BROMOPHENYL)-2-METHYLPROPANOIC ACID - Selective bromination of 2-methyl-2-phenylpropanoic acid in aqueous medium is described to obtain pure 2-(4-bromophenyl)-2-methylpropanoic acid, which is a useful key intermediate in the process of manufacturing pure fexofenadine. | 12-06-2012 |
20130030187 | PROCESS FOR THE PREPARATION OF (R,S)-NICOTINE - A process for (R,S)-nicotine is described. Condensation of 1-(but-1-enyl) pyrrolidin-2-one with nicotinic acid ester gave 1-(but-1-enyl)-3-nicotinoylpynolidin-2-one which on treatment with an acid and a base gave myosmine. Myosmine was converted to (R,S)-nicotine by reduction followed by N-methylation. | 01-31-2013 |
20130172618 | PROCESS FOR THE PREPARATION OF 4-IODO-3-NITROBENZAMIDE - A process for the preparation of 4-iodo-3-nitrobenzamide free from the impurities formed due to nucleophilic substitution of the labile iodo group is disclosed. | 07-04-2013 |