CAS: 1336-21-6; Ammonium Hydroxide

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专利信息

专利号:WO-2009018504-A1
优先权日:2007-08-01
标题 :Process for the synthesis of diaminopyridine and related compounds
发明人：RITTER JOACHIM C
权利人:DU PONT; RITTER JOACHIM C
摘要:A process is provided for the synthesis of a diaminopyridine, such as 2,6-diaminopyridine and related compounds, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a chlorine-ammonia displacement in the presence of a copper source.

专利号:US-2024287520-A1
优先权日:2021-06-30
标题:Method for synthesis of linkage modified oligomeric compounds
发明人：RODRIGUEZ ANDREW A
权利人:IONIS PHARMACEUTICALS INC
摘要:The present disclosure provides methods of synthesizing modified oligonucletodies and oligomeric compounds (including oligomeric compounds that are antisense agents or portions thereof) comprising a modified oligonucleotide having at least one modified internucleoside linking group. In certain embodiments, the present disclosure provides stabilized formulations of certain sulfonyl azides for use in the synthesis of olignonucleotides comprising one or more sulfonyl phosphoramidate linkages. Some embodiments provide stabilized compositions of high energy reagents that may be used in the synthesis of modified oligonucleotides, allowing for safe process scale preparation thereof.

专利号:US-6207858-B1
优先权日:1999-03-03
标 题 :Regioselective synthesis of DTPA derivatives
发明人：CHINN PAUL; GYORKOS ALBERT; LABARRE MICHAEL J; RUHL STEVE; RYSKAMP THOMAS
权利人:IDEC PHARMA CORP
摘要:The present invention provides a process for high yield regioselective synthesis of DTPA derivatives that eliminates the need for ion exchange chromotographic separation of intermediates. Moreover, as this process yields a single regioisomer of the chelate, it provides for the regiospecific synthesis of desired chelates useful as radiolabeling agents.

专利号:US-10913056-B2
优先权日:2017-07-31
标 题:Method for synthesis of copper/copper oxide nanocrystals
发明人：CHEN GUGANG; HARUTYUNYAN AVETIK; RAO YI; LI XIA
权利人:HONDA MOTOR CO LTD; UNIV TEMPLE; TEMPLE UNIV OF THE COMMONWEALTH SYSTEM OF HI
摘要:A simple approach to produce mixed Cu/Cu 2 O nanocrystals having a specific morphology by controlling the reaction temperature during Cu/Cu 2 O nanocrystals synthesis. Other variables are kept constant, such as the amount of reactants, while the reaction temperatures is maintained at a predetermined temperature of 70° C., 30° C. or 0° C., which are used to produce different and controlled morphologies for the Cu/Cu 2 O nanocrystals. The reaction mixture includes a copper ion contributor, a capping agent, a pH adjustor, and reducing agent. The reaction mixture is held at the predetermined temperature for three hours to produce the Cu/Cu 2 O nanocrystals. The synthesis method has advantages such as mass production, easy operation, and high reproducibility.

专利号:US-5623068-A
优先权日:1994-03-07
标 题:Synthesis of DNA using substituted phenylacetyl-protected nucleotides
发明人：REDDY M PARAMESWARA; FAROOQUI FIRDOUS; HANNA NAEEM B
权利人:BECKMAN INSTRUMENTS INC
摘要:Deoxyribonucleotide and ribonucleotide derivatives of the general formula I I wherein R1 represents -CR'R''-Ar, in which Ar is substituted aryl (as hereinafter defined) and R' and R'' are independently selected from the group consisting of hydrogen and lower alkyl; one of -R2 and R3 is a hydroxyl-protecting group and the other is a group suitable for synthesis of polynucleotides or for attachment of the nucleotide to a solid support; R4 is selected from the group consisting of hydrogen, -OH and protected hydroxyl; and B represents a divalent radical corresponding to a purine or pyrimidine base. When synthesis is carried out using these derivatives, the deprotection procedure is reduced to an essentially instantaneous process. The derivatives have acceptable shelf life and are very stable to conventional DNA synthesis conditions. Particularly preferred are those compounds wherein Ar is mono- and dihalo-substituted phenyl.

专利号:WO-2005051933-A1
优先权日:2003-11-28
标题 :An improved process for the synthesis of 4-(4-benzyloxy-carbonylamino-2-fluorophenyl)-piperazine-1-carboxylic acid tert-butyl ester, a key intermediate for oxazolidinone antimicrobials and compounds prepared thereby
发明人：KUMAR YATENDRA; KAUL VIJAY KUMAR; SINGH NITU; YADAV GYAN CHAND
权利人:RANBAXY LAB LTD; KUMAR YATENDRA; KAUL VIJAY KUMAR; SINGH NITU; YADAV GYAN CHAND
摘要:Provided herein are process for the synthesis of the 4-(4-benzyloxy-carbonylamino-2-fluorophenyl)-piperazine-1-carboxylic acid tert-butyl ester, which is a key intermediate in the synthesis of oxazolidinone compounds having antibacterial activity. Also provided herein are processes for preparing oxazolidinone compounds. In addition, compounds prepared by the processes provided herein are also encompassed. Formula (I) and Formula (II).