Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex
The molybdenum and tungsten complexes M2(OR)6 (Mo2F6, M = Mo, R = C(CF3)2Me; W2F3, M = W, R = OC(CF3)Me2) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF3)nMe3−n}] (MoF6, M = Mo, n = 2; WF3, M = W, n = 1; Mes = 2,4,6-trimethylphenyl). The corre...
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| Format: | Article |
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Beilstein-Institut
2018-09-01
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| Series: | Beilstein Journal of Organic Chemistry |
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| Online Access: | https://doi.org/10.3762/bjoc.14.220 |
| _version_ | 1818619894548135936 |
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| author | Henrike Ehrhorn Janin Schlösser Dirk Bockfeld Matthias Tamm |
| author_facet | Henrike Ehrhorn Janin Schlösser Dirk Bockfeld Matthias Tamm |
| author_sort | Henrike Ehrhorn |
| collection | DOAJ |
| description | The molybdenum and tungsten complexes M2(OR)6 (Mo2F6, M = Mo, R = C(CF3)2Me; W2F3, M = W, R = OC(CF3)Me2) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF3)nMe3−n}] (MoF6, M = Mo, n = 2; WF3, M = W, n = 1; Mes = 2,4,6-trimethylphenyl). The corresponding benzylidyne complex [PhC≡W{OC(CF3)Me2}] (WPhF3) was prepared by cleaving the W≡W bond in W2F3 with 1-phenyl-1-propyne. The catalytic alkyne metathesis activity of these metal complexes was determined in the self-metathesis, ring-closing alkyne metathesis and cross-metathesis of internal and terminal alkynes, revealing an almost equally high metathesis activity for the bimetallic tungsten complex W2F3 and the alkylidyne complex WPhF3. In contrast, Mo2F6 displayed no significant activity in alkyne metathesis. |
| first_indexed | 2024-12-16T17:44:44Z |
| format | Article |
| id | doaj.art-cf52c3b067cd4d71b81acdb1adfe2a61 |
| institution | Directory Open Access Journal |
| issn | 1860-5397 |
| language | English |
| last_indexed | 2024-12-16T17:44:44Z |
| publishDate | 2018-09-01 |
| publisher | Beilstein-Institut |
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| series | Beilstein Journal of Organic Chemistry |
| spelling | doaj.art-cf52c3b067cd4d71b81acdb1adfe2a612022-12-21T22:22:31ZengBeilstein-InstitutBeilstein Journal of Organic Chemistry1860-53972018-09-011412425243410.3762/bjoc.14.2201860-5397-14-220Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complexHenrike Ehrhorn0Janin Schlösser1Dirk Bockfeld2Matthias Tamm3Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, GermanyInstitut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, GermanyInstitut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, GermanyInstitut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, GermanyThe molybdenum and tungsten complexes M2(OR)6 (Mo2F6, M = Mo, R = C(CF3)2Me; W2F3, M = W, R = OC(CF3)Me2) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF3)nMe3−n}] (MoF6, M = Mo, n = 2; WF3, M = W, n = 1; Mes = 2,4,6-trimethylphenyl). The corresponding benzylidyne complex [PhC≡W{OC(CF3)Me2}] (WPhF3) was prepared by cleaving the W≡W bond in W2F3 with 1-phenyl-1-propyne. The catalytic alkyne metathesis activity of these metal complexes was determined in the self-metathesis, ring-closing alkyne metathesis and cross-metathesis of internal and terminal alkynes, revealing an almost equally high metathesis activity for the bimetallic tungsten complex W2F3 and the alkylidyne complex WPhF3. In contrast, Mo2F6 displayed no significant activity in alkyne metathesis.https://doi.org/10.3762/bjoc.14.220alkylidyne complexesalkyne metathesiscatalysisterminal alkynestungsten |
| spellingShingle | Henrike Ehrhorn Janin Schlösser Dirk Bockfeld Matthias Tamm Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex Beilstein Journal of Organic Chemistry alkylidyne complexes alkyne metathesis catalysis terminal alkynes tungsten |
| title | Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex |
| title_full | Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex |
| title_fullStr | Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex |
| title_full_unstemmed | Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex |
| title_short | Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex |
| title_sort | efficient catalytic alkyne metathesis with a fluoroalkoxy supported ditungsten iii complex |
| topic | alkylidyne complexes alkyne metathesis catalysis terminal alkynes tungsten |
| url | https://doi.org/10.3762/bjoc.14.220 |
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