PROCESS FOR PREPARATION OF 5-SUBSTITUTED TETRAZOLES
The present invention is a process for preparing sterically hindered 5-substituted tetrazole, which comprises of reacting a nitrile with an organotin halide and an azide in presence of a phase transfer catalyst, in an organic solvent and a co- solvent at reflux temperature for 4 to 20 h. La présente...
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| creator | POTLURI, RAMESH, BABU DEHURY, SANJAY, KUMAR VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN |
| description | The present invention is a process for preparing sterically hindered 5-substituted tetrazole, which comprises of reacting a nitrile with an organotin halide and an azide in presence of a phase transfer catalyst, in an organic solvent and a co- solvent at reflux temperature for 4 to 20 h.
La présente invention concerne un procédé de préparation de tétrazole substitué en 5 stériquement encombré qui consiste à faire réagir un nitrile avec un halogénure d'organotine et un azide en présence d'un catalyseur de transfert de phase dans un solvant organique et un co-solvant à une température de reflux sur une durée de 4 à 24 h. |
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La présente invention concerne un procédé de préparation de tétrazole substitué en 5 stériquement encombré qui consiste à faire réagir un nitrile avec un halogénure d'organotine et un azide en présence d'un catalyseur de transfert de phase dans un solvant organique et un co-solvant à une température de reflux sur une durée de 4 à 24 h.</description><language>eng ; fre</language><subject>CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2010</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20101125&DB=EPODOC&CC=WO&NR=2010133909A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20101125&DB=EPODOC&CC=WO&NR=2010133909A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>POTLURI, RAMESH, BABU</creatorcontrib><creatorcontrib>DEHURY, SANJAY, KUMAR</creatorcontrib><creatorcontrib>VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN</creatorcontrib><title>PROCESS FOR PREPARATION OF 5-SUBSTITUTED TETRAZOLES</title><description>The present invention is a process for preparing sterically hindered 5-substituted tetrazole, which comprises of reacting a nitrile with an organotin halide and an azide in presence of a phase transfer catalyst, in an organic solvent and a co- solvent at reflux temperature for 4 to 20 h.
La présente invention concerne un procédé de préparation de tétrazole substitué en 5 stériquement encombré qui consiste à faire réagir un nitrile avec un halogénure d'organotine et un azide en présence d'un catalyseur de transfert de phase dans un solvant organique et un co-solvant à une température de reflux sur une durée de 4 à 24 h.</description><subject>CHEMISTRY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2010</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAOCPJ3dg0OVnDzD1IICHINcAxyDPH091Pwd1Mw1Q0OdQoO8QwJDXF1UQhxDQlyjPL3cQ3mYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXx4f5GBoYGhsbGlgaWjkbGxKkCAF4LKFM</recordid><startdate>20101125</startdate><enddate>20101125</enddate><creator>POTLURI, RAMESH, BABU</creator><creator>DEHURY, SANJAY, KUMAR</creator><creator>VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN</creator><scope>EVB</scope></search><sort><creationdate>20101125</creationdate><title>PROCESS FOR PREPARATION OF 5-SUBSTITUTED TETRAZOLES</title><author>POTLURI, RAMESH, BABU ; DEHURY, SANJAY, KUMAR ; VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_WO2010133909A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2010</creationdate><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>POTLURI, RAMESH, BABU</creatorcontrib><creatorcontrib>DEHURY, SANJAY, KUMAR</creatorcontrib><creatorcontrib>VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>POTLURI, RAMESH, BABU</au><au>DEHURY, SANJAY, KUMAR</au><au>VENKATA SUBHRAMANIAN, HARIHARA KRISHNAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESS FOR PREPARATION OF 5-SUBSTITUTED TETRAZOLES</title><date>2010-11-25</date><risdate>2010</risdate><abstract>The present invention is a process for preparing sterically hindered 5-substituted tetrazole, which comprises of reacting a nitrile with an organotin halide and an azide in presence of a phase transfer catalyst, in an organic solvent and a co- solvent at reflux temperature for 4 to 20 h.
La présente invention concerne un procédé de préparation de tétrazole substitué en 5 stériquement encombré qui consiste à faire réagir un nitrile avec un halogénure d'organotine et un azide en présence d'un catalyseur de transfert de phase dans un solvant organique et un co-solvant à une température de reflux sur une durée de 4 à 24 h.</abstract><oa>free_for_read</oa></addata></record> |
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| title | PROCESS FOR PREPARATION OF 5-SUBSTITUTED TETRAZOLES |
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