PROCESSO OXIDATIVO PARA A PREPARACAO DE DERIVADOS DA NARVEDINA
The subject invention concerns a process for the preparation of a compound of formula (2), which comprises phenolic oxidation of a compound of formula (1)wherein X1 and X2 are independently selected from H or a protecting group for the phenolic function, e.g. acyl or trialkylsilyl; groups A1, A2, B1...
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| creator | NICHOLAS BERNARD JOHNSON JAMES HENSHILWOOD |
| description | The subject invention concerns a process for the preparation of a compound of formula (2), which comprises phenolic oxidation of a compound of formula (1)wherein X1 and X2 are independently selected from H or a protecting group for the phenolic function, e.g. acyl or trialkylsilyl; groups A1, A2, B1, B2 and Y are selected so as to render the nitrogen atom non-basic; Z is a blocking group, e.g. Br or t-butyl; and R is H, alkyl, aryl, or arylalkyl, and wherein the process is carried out in a two-phase liquid system comprising an aqueous base and an organic solvent having a dielectric constant below 4.8. |
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groups A1, A2, B1, B2 and Y are selected so as to render the nitrogen atom non-basic; Z is a blocking group, e.g. Br or t-butyl; and R is H, alkyl, aryl, or arylalkyl, and wherein the process is carried out in a two-phase liquid system comprising an aqueous base and an organic solvent having a dielectric constant below 4.8.</description><edition>6</edition><language>por</language><subject>CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2002</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=20020731&DB=EPODOC&CC=PT&NR=819112E$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020731&DB=EPODOC&CC=PT&NR=819112E$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NICHOLAS BERNARD JOHNSON</creatorcontrib><creatorcontrib>JAMES HENSHILWOOD</creatorcontrib><title>PROCESSO OXIDATIVO PARA A PREPARACAO DE DERIVADOS DA NARVEDINA</title><description>The subject invention concerns a process for the preparation of a compound of formula (2), which comprises phenolic oxidation of a compound of formula (1)wherein X1 and X2 are independently selected from H or a protecting group for the phenolic function, e.g. acyl or trialkylsilyl; groups A1, A2, B1, B2 and Y are selected so as to render the nitrogen atom non-basic; Z is a blocking group, e.g. Br or t-butyl; and R is H, alkyl, aryl, or arylalkyl, and wherein the process is carried out in a two-phase liquid system comprising an aqueous base and an organic solvent having a dielectric constant below 4.8.</description><subject>CHEMISTRY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLALCPJ3dg0O9lfwj_B0cQzxDPNXCHAMclRwVAgIcgWxnB39FVxcgSjIM8zRxT9YwcVRwc8xKMzVxdPPkYeBNS0xpziVF0pzM8i7uYY4e-imFuTHpxYXJCan5qWWxAeEWBhaGhoauboaE1YBAKZfKVQ</recordid><startdate>20020731</startdate><enddate>20020731</enddate><creator>NICHOLAS BERNARD JOHNSON</creator><creator>JAMES HENSHILWOOD</creator><scope>EVB</scope></search><sort><creationdate>20020731</creationdate><title>PROCESSO OXIDATIVO PARA A PREPARACAO DE DERIVADOS DA NARVEDINA</title><author>NICHOLAS BERNARD JOHNSON ; JAMES HENSHILWOOD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_PT819112EE3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>por</language><creationdate>2002</creationdate><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>NICHOLAS BERNARD JOHNSON</creatorcontrib><creatorcontrib>JAMES HENSHILWOOD</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NICHOLAS BERNARD JOHNSON</au><au>JAMES HENSHILWOOD</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESSO OXIDATIVO PARA A PREPARACAO DE DERIVADOS DA NARVEDINA</title><date>2002-07-31</date><risdate>2002</risdate><abstract>The subject invention concerns a process for the preparation of a compound of formula (2), which comprises phenolic oxidation of a compound of formula (1)wherein X1 and X2 are independently selected from H or a protecting group for the phenolic function, e.g. acyl or trialkylsilyl; groups A1, A2, B1, B2 and Y are selected so as to render the nitrogen atom non-basic; Z is a blocking group, e.g. Br or t-butyl; and R is H, alkyl, aryl, or arylalkyl, and wherein the process is carried out in a two-phase liquid system comprising an aqueous base and an organic solvent having a dielectric constant below 4.8.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY |
| title | PROCESSO OXIDATIVO PARA A PREPARACAO DE DERIVADOS DA NARVEDINA |
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