Oxygen activation by copper camphor complexes
Cleavage of the carboximide CN bond promoted by reaction of camphor carboximide hydrochlorides (OC 10 H 15 CONHCH 2 COOLi(H 2 O) 2 ·2HCl ( 2 ) or OC 10 H 15 CONHCH(CH 2 Ph)COOLi(H 2 O)·HCl ( 3 )) with CuCl 2 leads to the corresponding amino acid complexes ([Cu(H 2 NCH 2 COO) 2 ] ( I ) and [Cu{H 2 NC...
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| Veröffentlicht in: | Inorganic chemistry frontiers 2015-01, Vol.2 (11), p.1019-1028 |
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| creator | Roseiro, Alexandra P. S. Adão, Pedro Galvão, Adelino M. Costa Pessoa, João Botelho do Rego, Ana M. Carvalho, M. Fernanda N. N. |
| description | Cleavage of the carboximide CN bond promoted by reaction of camphor carboximide hydrochlorides (OC
10
H
15
CONHCH
2
COOLi(H
2
O)
2
·2HCl (
2
) or OC
10
H
15
CONHCH(CH
2
Ph)COOLi(H
2
O)·HCl (
3
)) with CuCl
2
leads to the corresponding amino acid complexes ([Cu(H
2
NCH
2
COO)
2
] (
I
) and [Cu{H
2
NCH(CH
2
Ph)COO}
2
]·(H
2
O) (
II
)), and the camphor carboxylate residue (OC
10
H
15
COO
−
) which is catalytically oxidized to camphorquinone by oxygen from air. The process is mediated by coordination of the camphor carboxylate to copper. The reaction of the camphor carboximide hydrochloride (OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)·HCl) (
4
) with CuCl
2
follows a different trend. In this case the CN camphor carboximide bond remains intact and the complexes [CuCl{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
III
) and [{CuCl
2
}
2
{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
IV
) form. However, a redox process also occurs, since formation of
III
requires Cu(
ii
) → Cu(
i
) reduction as confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry. A related reduction process was identified in the formation of [CuCl(OC
10
H
15
COOLi)] (
V
) from CuCl
2
upon reaction with lithium camphor carboxylate (OC
10
H
15
COOLi) under nitrogen. The above results show that electron transfer is highly facilitated in the copper camphor carboximide/carboxylate system. Such an ability was used to activate oxygen from air and promote the oxidation of ethylacetoacetate to pyruvate using
V
as the catalyst. |
| doi_str_mv | 10.1039/C5QI00064E |
| format | Article |
| fullrecord | <record><control><sourceid>crossref</sourceid><recordid>TN_cdi_crossref_primary_10_1039_C5QI00064E</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1039_C5QI00064E</sourcerecordid><originalsourceid>FETCH-LOGICAL-c231t-33f53947d486b76dc95e710ffdf7ab49e1e3b9d216c5c51f39c25645bd2ab35a3</originalsourceid><addsrcrecordid>eNpNj1FLwzAURoM4cMy9-Av6LERzc3NT8yhl6mAwBPdckjTRyrqUpsj6750ozKfzPXwcOIzdgLgDgea-ote1EEKr1QWbS0GSAxFe_ttXbJnz5-kDoARoMWd8e5zew6Gwfmy_7NimQ-Gmwqe-D0Phbdd_pBNT1-_DMeRrNot2n8Pyjwu2e1q9VS98s31eV48b7iXCyBEjoVFlox60K3XjDYUSRIxNLK1TJkBAZxoJ2pMniGi8JK3INdI6JIsLdvvr9UPKeQix7oe2s8NUg6h_WutzK34DMLNFzQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Oxygen activation by copper camphor complexes</title><source>Royal Society Of Chemistry Journals 2008-</source><creator>Roseiro, Alexandra P. S. ; Adão, Pedro ; Galvão, Adelino M. ; Costa Pessoa, João ; Botelho do Rego, Ana M. ; Carvalho, M. Fernanda N. N.</creator><creatorcontrib>Roseiro, Alexandra P. S. ; Adão, Pedro ; Galvão, Adelino M. ; Costa Pessoa, João ; Botelho do Rego, Ana M. ; Carvalho, M. Fernanda N. N.</creatorcontrib><description>Cleavage of the carboximide CN bond promoted by reaction of camphor carboximide hydrochlorides (OC
10
H
15
CONHCH
2
COOLi(H
2
O)
2
·2HCl (
2
) or OC
10
H
15
CONHCH(CH
2
Ph)COOLi(H
2
O)·HCl (
3
)) with CuCl
2
leads to the corresponding amino acid complexes ([Cu(H
2
NCH
2
COO)
2
] (
I
) and [Cu{H
2
NCH(CH
2
Ph)COO}
2
]·(H
2
O) (
II
)), and the camphor carboxylate residue (OC
10
H
15
COO
−
) which is catalytically oxidized to camphorquinone by oxygen from air. The process is mediated by coordination of the camphor carboxylate to copper. The reaction of the camphor carboximide hydrochloride (OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)·HCl) (
4
) with CuCl
2
follows a different trend. In this case the CN camphor carboximide bond remains intact and the complexes [CuCl{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
III
) and [{CuCl
2
}
2
{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
IV
) form. However, a redox process also occurs, since formation of
III
requires Cu(
ii
) → Cu(
i
) reduction as confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry. A related reduction process was identified in the formation of [CuCl(OC
10
H
15
COOLi)] (
V
) from CuCl
2
upon reaction with lithium camphor carboxylate (OC
10
H
15
COOLi) under nitrogen. The above results show that electron transfer is highly facilitated in the copper camphor carboximide/carboxylate system. Such an ability was used to activate oxygen from air and promote the oxidation of ethylacetoacetate to pyruvate using
V
as the catalyst.</description><identifier>ISSN: 2052-1553</identifier><identifier>EISSN: 2052-1553</identifier><identifier>DOI: 10.1039/C5QI00064E</identifier><language>eng</language><ispartof>Inorganic chemistry frontiers, 2015-01, Vol.2 (11), p.1019-1028</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c231t-33f53947d486b76dc95e710ffdf7ab49e1e3b9d216c5c51f39c25645bd2ab35a3</citedby><cites>FETCH-LOGICAL-c231t-33f53947d486b76dc95e710ffdf7ab49e1e3b9d216c5c51f39c25645bd2ab35a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Roseiro, Alexandra P. S.</creatorcontrib><creatorcontrib>Adão, Pedro</creatorcontrib><creatorcontrib>Galvão, Adelino M.</creatorcontrib><creatorcontrib>Costa Pessoa, João</creatorcontrib><creatorcontrib>Botelho do Rego, Ana M.</creatorcontrib><creatorcontrib>Carvalho, M. Fernanda N. N.</creatorcontrib><title>Oxygen activation by copper camphor complexes</title><title>Inorganic chemistry frontiers</title><description>Cleavage of the carboximide CN bond promoted by reaction of camphor carboximide hydrochlorides (OC
10
H
15
CONHCH
2
COOLi(H
2
O)
2
·2HCl (
2
) or OC
10
H
15
CONHCH(CH
2
Ph)COOLi(H
2
O)·HCl (
3
)) with CuCl
2
leads to the corresponding amino acid complexes ([Cu(H
2
NCH
2
COO)
2
] (
I
) and [Cu{H
2
NCH(CH
2
Ph)COO}
2
]·(H
2
O) (
II
)), and the camphor carboxylate residue (OC
10
H
15
COO
−
) which is catalytically oxidized to camphorquinone by oxygen from air. The process is mediated by coordination of the camphor carboxylate to copper. The reaction of the camphor carboximide hydrochloride (OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)·HCl) (
4
) with CuCl
2
follows a different trend. In this case the CN camphor carboximide bond remains intact and the complexes [CuCl{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
III
) and [{CuCl
2
}
2
{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
IV
) form. However, a redox process also occurs, since formation of
III
requires Cu(
ii
) → Cu(
i
) reduction as confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry. A related reduction process was identified in the formation of [CuCl(OC
10
H
15
COOLi)] (
V
) from CuCl
2
upon reaction with lithium camphor carboxylate (OC
10
H
15
COOLi) under nitrogen. The above results show that electron transfer is highly facilitated in the copper camphor carboximide/carboxylate system. Such an ability was used to activate oxygen from air and promote the oxidation of ethylacetoacetate to pyruvate using
V
as the catalyst.</description><issn>2052-1553</issn><issn>2052-1553</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNpNj1FLwzAURoM4cMy9-Av6LERzc3NT8yhl6mAwBPdckjTRyrqUpsj6750ozKfzPXwcOIzdgLgDgea-ote1EEKr1QWbS0GSAxFe_ttXbJnz5-kDoARoMWd8e5zew6Gwfmy_7NimQ-Gmwqe-D0Phbdd_pBNT1-_DMeRrNot2n8Pyjwu2e1q9VS98s31eV48b7iXCyBEjoVFlox60K3XjDYUSRIxNLK1TJkBAZxoJ2pMniGi8JK3INdI6JIsLdvvr9UPKeQix7oe2s8NUg6h_WutzK34DMLNFzQ</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>Roseiro, Alexandra P. S.</creator><creator>Adão, Pedro</creator><creator>Galvão, Adelino M.</creator><creator>Costa Pessoa, João</creator><creator>Botelho do Rego, Ana M.</creator><creator>Carvalho, M. Fernanda N. N.</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20150101</creationdate><title>Oxygen activation by copper camphor complexes</title><author>Roseiro, Alexandra P. S. ; Adão, Pedro ; Galvão, Adelino M. ; Costa Pessoa, João ; Botelho do Rego, Ana M. ; Carvalho, M. Fernanda N. N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c231t-33f53947d486b76dc95e710ffdf7ab49e1e3b9d216c5c51f39c25645bd2ab35a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Roseiro, Alexandra P. S.</creatorcontrib><creatorcontrib>Adão, Pedro</creatorcontrib><creatorcontrib>Galvão, Adelino M.</creatorcontrib><creatorcontrib>Costa Pessoa, João</creatorcontrib><creatorcontrib>Botelho do Rego, Ana M.</creatorcontrib><creatorcontrib>Carvalho, M. Fernanda N. N.</creatorcontrib><collection>CrossRef</collection><jtitle>Inorganic chemistry frontiers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Roseiro, Alexandra P. S.</au><au>Adão, Pedro</au><au>Galvão, Adelino M.</au><au>Costa Pessoa, João</au><au>Botelho do Rego, Ana M.</au><au>Carvalho, M. Fernanda N. N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oxygen activation by copper camphor complexes</atitle><jtitle>Inorganic chemistry frontiers</jtitle><date>2015-01-01</date><risdate>2015</risdate><volume>2</volume><issue>11</issue><spage>1019</spage><epage>1028</epage><pages>1019-1028</pages><issn>2052-1553</issn><eissn>2052-1553</eissn><abstract>Cleavage of the carboximide CN bond promoted by reaction of camphor carboximide hydrochlorides (OC
10
H
15
CONHCH
2
COOLi(H
2
O)
2
·2HCl (
2
) or OC
10
H
15
CONHCH(CH
2
Ph)COOLi(H
2
O)·HCl (
3
)) with CuCl
2
leads to the corresponding amino acid complexes ([Cu(H
2
NCH
2
COO)
2
] (
I
) and [Cu{H
2
NCH(CH
2
Ph)COO}
2
]·(H
2
O) (
II
)), and the camphor carboxylate residue (OC
10
H
15
COO
−
) which is catalytically oxidized to camphorquinone by oxygen from air. The process is mediated by coordination of the camphor carboxylate to copper. The reaction of the camphor carboximide hydrochloride (OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)·HCl) (
4
) with CuCl
2
follows a different trend. In this case the CN camphor carboximide bond remains intact and the complexes [CuCl{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
III
) and [{CuCl
2
}
2
{OC
10
H
15
CONH(CH
2
)
2
COOLi(H
2
O)}] (
IV
) form. However, a redox process also occurs, since formation of
III
requires Cu(
ii
) → Cu(
i
) reduction as confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry. A related reduction process was identified in the formation of [CuCl(OC
10
H
15
COOLi)] (
V
) from CuCl
2
upon reaction with lithium camphor carboxylate (OC
10
H
15
COOLi) under nitrogen. The above results show that electron transfer is highly facilitated in the copper camphor carboximide/carboxylate system. Such an ability was used to activate oxygen from air and promote the oxidation of ethylacetoacetate to pyruvate using
V
as the catalyst.</abstract><doi>10.1039/C5QI00064E</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2052-1553 |
| ispartof | Inorganic chemistry frontiers, 2015-01, Vol.2 (11), p.1019-1028 |
| issn | 2052-1553 2052-1553 |
| language | eng |
| recordid | cdi_crossref_primary_10_1039_C5QI00064E |
| source | Royal Society Of Chemistry Journals 2008- |
| title | Oxygen activation by copper camphor complexes |
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