OXIDATIVES VERFAHREN ZUR HERSTELLUNG VON NARWEDIN-DERIVATEN
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 | HENSHILWOOD, JAMES JOHNSON, NICHOLAS, BERNARD |
| 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>7</edition><language>ger</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=20020215&DB=EPODOC&CC=AT&NR=E213228T1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020215&DB=EPODOC&CC=AT&NR=E213228T1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HENSHILWOOD, JAMES</creatorcontrib><creatorcontrib>JOHNSON, NICHOLAS, BERNARD</creatorcontrib><title>OXIDATIVES VERFAHREN ZUR HERSTELLUNG VON NARWEDIN-DERIVATEN</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>eNrjZLD2j_B0cQzxDHMNVghzDXJz9Ahy9VOICg1S8HANCg5x9fEJ9XNXCPP3U_BzDAp3dfH003VxDfIMcwxx9eNhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFApUaGxkZGFiEhhsbEqAEAJ7gqUQ</recordid><startdate>20020215</startdate><enddate>20020215</enddate><creator>HENSHILWOOD, JAMES</creator><creator>JOHNSON, NICHOLAS, BERNARD</creator><scope>EVB</scope></search><sort><creationdate>20020215</creationdate><title>OXIDATIVES VERFAHREN ZUR HERSTELLUNG VON NARWEDIN-DERIVATEN</title><author>HENSHILWOOD, JAMES ; JOHNSON, NICHOLAS, BERNARD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_ATE213228TT13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>ger</language><creationdate>2002</creationdate><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>HENSHILWOOD, JAMES</creatorcontrib><creatorcontrib>JOHNSON, NICHOLAS, BERNARD</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HENSHILWOOD, JAMES</au><au>JOHNSON, NICHOLAS, BERNARD</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OXIDATIVES VERFAHREN ZUR HERSTELLUNG VON NARWEDIN-DERIVATEN</title><date>2002-02-15</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>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY |
| title | OXIDATIVES VERFAHREN ZUR HERSTELLUNG VON NARWEDIN-DERIVATEN |
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