Mohmand, G.F. and Thiele, K. and Went, M.J. (1994) Preparation of cyclic and acyclic thioethers via hexacarbonyldicobalt alkyne complexes. Journal of Organometallic Chemistry, 471 (1-2). pp. 241-248. ISSN 0022-328X.
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Abstract
Demetallation of [Co2{mu-C2(CH2SCH2CH2)2S}(CO)6] with trimethylamine N-oxide affords 1,4,7-trithiacycloundec-9-yne, while similar treatment of [Co2(CO)6{mu-(CCH2SCH2CH2SCH2CH2SCH2C)2}Co2(Co)6] affords 1,4,7,12,15,18-hexathiacyclodocos-9,2-diyne. 20-diyne. A single crystal X-ray diffraction study and H-1 NMR spectroscopy have confirmed that 1,4,7-trithiacycloundec-9-yne adopts an exodentate conformation in the solid and solution states. Trimethylamine N-oxide promoted Pauson-Khand reactions of [Co2(mu-R1C = CCH2SR2)(CO)6] (R1 = H, R2 = Et; R1 = Me, R2 = Et) or [Co2(mu-RSCH2=CCH2SR)(CO)6] (R = Et; R-R = CH2CH2, CH2CH2CH2 or CH2CH2SCH2CH2) with norbornene or of [Co2(mu-R1C=CCH2SR2)(CO)6] (R1 = H, R2 = Et; R1 = Me, R2 = Et) with norbornadiene afford a range of cyclopentenone products, which have been characterised by NMR, IR and mass spectroscopy.
| Item Type: | Article |
|---|---|
| Uncontrolled keywords: | cobalt; alkyne; macrocycle; thioether; pauson-khand reaction; cyclopentenone |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Biosciences |
| Depositing User: | O.O. Odanye |
| Date Deposited: | 06 Jul 2009 18:19 |
| Last Modified: | 06 Jul 2009 18:19 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/19916 (The current URI for this page, for reference purposes) |
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