| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 564487000 | Preparing directly from hetero ring containing compound | 7 |
| 20090209788 | PROCESS FOR PREPARATION OF ALKOXYLATED ALKYLAMINES/ALKYL ETHER AMINES WITH PEAKED DISTRIBUTION - The present invention generally relates to a process for preparing alkoxylated alkylamines and/or alkyl ether amines. The process consists of two stages and utilizes a catalyst with a multiple-charge counterion. The alkoxylated alkylamines and alkoxylated alkyl ether amines prepared by the process possess the peaked ethoxylation distribution and contain less hazardous by-product. | 08-20-2009 |
| 20100016639 | PRODUCTION OF CHIRALLY PURE AMINO ALCOHOL INTERMEDIATES, DERIVATIVES THEREOF, AND USES THEREOF - A method of selectively preparing a chiral 2S-amino alcohol useful in preparation of an amide sulfonated or acylated with alkyl, substituted aryl or substituted heteroaryl is described. The method involves reacting a di-tert-butyl diazene-1,2-dicarboxylate with a (4S)-4-benzyl-3-[(S)-trifluoromethyl-alkyl substituted alkanoyl]-1,3-oxazolidin-2-one to afford a di-tert-butyl 1-(1S,2S)-([(4S)-4-benzyl-2-oxo-1,3-oxazolidine-3-yl]-carbonyl}-trifluoromethyl-alkyl substituted alkyl)hydrazine-1,2-dicarboxylate. This dicarboxylate is then reduced to yield di-tert-butyl 1-(1S,2S)-[trifluoromethyl-alkyl substituted alkyl]hydrazine-1-(hydroxymethyl)-1,2-dicarboxylate. The resulting product is deblocked with an acid to yield the acid addition salt of (2S,3S)-trifluoro-hydrazino-methyl alkan-1-ol. The acid addition salt of (2S,3S)-trifluoro-2-hydrazino-methyl alkan-1-ol is hydrogenated in the presence of a suitable metal catalyst to yield the amino alcohol (2S,3S)-2-amino-trifluoro-methyl alkan-1-ol HCl. | 01-21-2010 |
| 20110071318 | METHOD AND APPARATUS FOR PRODUCING MONO-LOWER-ALKYL MONOALKANOLAMINE - A reaction column ( | 03-24-2011 |
| 20120101303 | METHYL-SUBSTITUTED TETA COMPOUNDS - The invention relates to a process for preparing triethylenetetramine substituted by at least one methyl group (Me-TETA or methyl-substituted TETA compounds). Me-TETA is prepared by hydrogenating biscyanomethylimidazolidine (BCMI) in the presence of a catalyst. The present invention further relates to methyl-substituted TETA compounds as such. The present invention further relates to the use of methyl-substituted TETA compounds as a reactant or intermediate in the production of, for example, coatings or adhesives. | 04-26-2012 |
| 20120157715 | PROCESS FOR PREPARING AN N,N-DIALKY-ETHANOLAMINE HAVING HIGH COLOR STABILITY - A process for preparing an N,N-dialkylethanolamine of the formula I having high color stability | 06-21-2012 |
| 20120178968 | METHOD FOR PREPARATION OF 1,1-DIAMINO-2,2-DINITROETHYLENE - Disclosed is a method for preparation of 1,1-diamino-2,2-dinitroethylene (DADNE) through the hydrolysis of 4,6-dihydroxy-5,5-dinitro-2-(dinitromethylene)-2,5-dihydropyrimidine (DHDNDP) obtained by the nitration of 4,6-dihydroxy-2-methylpyrimidine (DHMP), which can avoid eruption or sudden frothing of a reaction solution on a lab scale and even a large scale preparation as well as reduce the reaction time. | 07-12-2012 |
| 20120264979 | PROCESS FOR PREPARING N,N-DIMETHYLAMINOETHOXYETHANOL - A process for preparing N,N-dimethylaminoethoxyethanol (DMAEE), wherein
| 10-18-2012 |
