| ชื่อเรื่อง | : | Enantioselective copper-catalysed reductive Michael cyclisations |
| นักวิจัย | : | Oswald, Claire Louise |
| คำค้น | : | Michael reaction , ketones (benzene compounds) |
| หน่วยงาน | : | Edinburgh Research Archive, United Kingdom |
| ผู้ร่วมงาน | : | Lam, Hon Wai |
| ปีพิมพ์ | : | 2553 |
| อ้างอิง | : | http://hdl.handle.net/1842/4614 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | - |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | Hydrometalation of α,β-unsaturated carbonyl compounds provides access to reactive metal enolates, which can then be trapped by a suitable electrophile. The coppercatalysed reductive aldol reaction involves hydrometalation of an α,β-unsaturated carbonyl compound, followed by an inter- or intramolecular aldol reaction. While there have been numerous examples of copper-catalysed reductive aldol reactions reported in the literature, the corresponding reductive Michael reaction has been relatively understudied. Herein, the copper-catalysed reductive Michael cyclisation of substrates containing two α,β-unsaturated carbonyl moieties is described. A range of structurally and electronically diverse substrates were prepared by various different methods. Both α,β-unsaturated ketones and esters underwent cyclisation, in the presence of a copper catalyst, a bisphosphine ligand, and a stoichiometric reductant, to afford 5- and 6- membered carbocyclic and heterocyclic products, with good-to-excellent levels of diastereo- and enantiocontrol. Furthermore, the diastereochemical outcome of these reactions is dependent on the specific reaction conditions used. |
| บรรณานุกรม | : |
Oswald, Claire Louise . (2553). Enantioselective copper-catalysed reductive Michael cyclisations.
กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom . Oswald, Claire Louise . 2553. "Enantioselective copper-catalysed reductive Michael cyclisations".
กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom . Oswald, Claire Louise . "Enantioselective copper-catalysed reductive Michael cyclisations."
กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom , 2553. Print. Oswald, Claire Louise . Enantioselective copper-catalysed reductive Michael cyclisations. กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom ; 2553.
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