17 O NMR study of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes
Oxygen‐17 NMR spectra were obtained from the four pairs of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes, where R=OMe (2), NMe 2 (3), H (4) or Me (5). The isomerism has been previously shown to be configurational at phosphorus, with one isomer of each pair having an equatorial phosphoryl oxygen (a is...
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| Veröffentlicht in: | Organic magnetic resonance 1983-08, Vol.21 (8), p.491-493 |
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| container_title | Organic magnetic resonance |
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| creator | Bock, Paul L. Mosbo, John A. Redmon, John L. |
| description | Oxygen‐17 NMR spectra were obtained from the four pairs of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes, where R=OMe (2), NMe
2
(3), H (4) or Me (5). The isomerism has been previously shown to be configurational at phosphorus, with one isomer of each pair having an equatorial phosphoryl oxygen (a isomer), and the other an axial orientation for phosphoryl oxygen (b isomer). Only data for the phosphoryl oxygen are reported. Substitution of OMe or NMe
2
for H or Me produced upfield shifts of 27.9‐41.8 ppm. In all cases, the chemical shifts of the a isomers were upfield of the b analogs, with differences of 7.9, 18.0, 20.3 and 8.6 ppm for 2—5, respectively. The absolute values of
1
J
(
31
P
17
O) were 5–9 Hz larger for the a isomers. |
| doi_str_mv | 10.1002/omr.1270210808 |
| format | Article |
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2
(3), H (4) or Me (5). The isomerism has been previously shown to be configurational at phosphorus, with one isomer of each pair having an equatorial phosphoryl oxygen (a isomer), and the other an axial orientation for phosphoryl oxygen (b isomer). Only data for the phosphoryl oxygen are reported. Substitution of OMe or NMe
2
for H or Me produced upfield shifts of 27.9‐41.8 ppm. In all cases, the chemical shifts of the a isomers were upfield of the b analogs, with differences of 7.9, 18.0, 20.3 and 8.6 ppm for 2—5, respectively. The absolute values of
1
J
(
31
P
17
O) were 5–9 Hz larger for the a isomers.</description><identifier>ISSN: 0030-4921</identifier><identifier>DOI: 10.1002/omr.1270210808</identifier><language>eng</language><ispartof>Organic magnetic resonance, 1983-08, Vol.21 (8), p.491-493</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c848-9cf2f53f06905562574e7f360244c7eca310ed11acb42e0ecbaf2771fe7610593</citedby><cites>FETCH-LOGICAL-c848-9cf2f53f06905562574e7f360244c7eca310ed11acb42e0ecbaf2771fe7610593</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>Bock, Paul L.</creatorcontrib><creatorcontrib>Mosbo, John A.</creatorcontrib><creatorcontrib>Redmon, John L.</creatorcontrib><title>17 O NMR study of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes</title><title>Organic magnetic resonance</title><description>Oxygen‐17 NMR spectra were obtained from the four pairs of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes, where R=OMe (2), NMe
2
(3), H (4) or Me (5). The isomerism has been previously shown to be configurational at phosphorus, with one isomer of each pair having an equatorial phosphoryl oxygen (a isomer), and the other an axial orientation for phosphoryl oxygen (b isomer). Only data for the phosphoryl oxygen are reported. Substitution of OMe or NMe
2
for H or Me produced upfield shifts of 27.9‐41.8 ppm. In all cases, the chemical shifts of the a isomers were upfield of the b analogs, with differences of 7.9, 18.0, 20.3 and 8.6 ppm for 2—5, respectively. The absolute values of
1
J
(
31
P
17
O) were 5–9 Hz larger for the a isomers.</description><issn>0030-4921</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1983</creationdate><recordtype>article</recordtype><recordid>eNpFj81KAzEUhbNQsFa3rvMAnfHe_ExmllLUFqqF0v2QZm4w4jQlUWh3PoLP6JM4g4KL7xzO5sDH2A1CiQDiNvapRGFAINRQn7EJgIRCNQIv2GXOrwAatIEJW6Dha_78tOH5_aM78eh5yLGnFBwX359fm4Gx4zEOiTM5G1cX4tEeXmIeSGFv95Sv2Lm3b5mu_3rKtg_32_miWK0fl_O7VeFqVReN88Jr6aFqQOtKaKPIeFmBUMoZclYiUIdo3U4JAnI764Ux6MlUCLqRU1b-3roUc07k20MKvU2nFqEd1dtBvf1Xlz9DFlE5</recordid><startdate>198308</startdate><enddate>198308</enddate><creator>Bock, Paul L.</creator><creator>Mosbo, John A.</creator><creator>Redmon, John L.</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>198308</creationdate><title>17 O NMR study of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes</title><author>Bock, Paul L. ; Mosbo, John A. ; Redmon, John L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c848-9cf2f53f06905562574e7f360244c7eca310ed11acb42e0ecbaf2771fe7610593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1983</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Bock, Paul L.</creatorcontrib><creatorcontrib>Mosbo, John A.</creatorcontrib><creatorcontrib>Redmon, John L.</creatorcontrib><collection>CrossRef</collection><jtitle>Organic magnetic resonance</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bock, Paul L.</au><au>Mosbo, John A.</au><au>Redmon, John L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>17 O NMR study of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes</atitle><jtitle>Organic magnetic resonance</jtitle><date>1983-08</date><risdate>1983</risdate><volume>21</volume><issue>8</issue><spage>491</spage><epage>493</epage><pages>491-493</pages><issn>0030-4921</issn><abstract>Oxygen‐17 NMR spectra were obtained from the four pairs of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes, where R=OMe (2), NMe
2
(3), H (4) or Me (5). The isomerism has been previously shown to be configurational at phosphorus, with one isomer of each pair having an equatorial phosphoryl oxygen (a isomer), and the other an axial orientation for phosphoryl oxygen (b isomer). Only data for the phosphoryl oxygen are reported. Substitution of OMe or NMe
2
for H or Me produced upfield shifts of 27.9‐41.8 ppm. In all cases, the chemical shifts of the a isomers were upfield of the b analogs, with differences of 7.9, 18.0, 20.3 and 8.6 ppm for 2—5, respectively. The absolute values of
1
J
(
31
P
17
O) were 5–9 Hz larger for the a isomers.</abstract><doi>10.1002/omr.1270210808</doi><tpages>3</tpages></addata></record> |
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| identifier | ISSN: 0030-4921 |
| ispartof | Organic magnetic resonance, 1983-08, Vol.21 (8), p.491-493 |
| issn | 0030-4921 |
| language | eng |
| recordid | cdi_crossref_primary_10_1002_omr_1270210808 |
| source | Wiley Online Library Journals Frontfile Complete |
| title | 17 O NMR study of isomeric 2‐R‐2‐oxo‐1,3,2‐dioxaphosphorinanes |
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