Rhodium-catalyzed reactions of (Z)-2-EN-4yne acetates with arylboronic acids
tarafından
 
Karakuş, Erman.

Başlık
Rhodium-catalyzed reactions of (Z)-2-EN-4yne acetates with arylboronic acids

Yazar
Karakuş, Erman.

Yazar Ek Girişi
Karakuş, Erman.

Yayın Bilgileri
[s.l.]: [s.n.], 2011.

Fiziksel Tanımlama
x, 188 leaves.: ill. + 1 computer laser optical disc.

Özet
This study is the first example of rhodium(I)-catalyzed arylative SN2ʺ type reaction of (Z)-2-en-4-yne acetates with arylboronic acids leading to E-configured vinyl-allenes with an aryl moiety. The coordinative interaction of the rhodium with carbonyl oxygen promoted the -elimination of Rh(I)-OAc from the alkenylrhodium intermediate in both syn- and anti-modes, with the syn-elimination being the major path. DFT calculations revealed that a conformer of this intermediate which can lead to the E-configured vinylallene product via the syn-elimination mode, is energetically the most favorable conformer. The rhodium-catalyzed procedure is not applicable to reactions involving (E)- configured enyne acetates, because the geometry of the alkenylrhodium intermediate that is derived from the corresponding E-enyne acetate would not allow such coordinative interaction to occur.

Konu Başlığı
Rhodium catalysts.
 
Acetates.

Yazar Ek Girişi
Artok, Levent.

Tüzel Kişi Ek Girişi
İzmir Institute of Technology. Chemistry.

Tek Biçim Eser Adı
Thesis (Master)--İzmir Institute of Technology: Chemistry.
 
İzmir Institute of Technology: Chemistry--Thesis (Master).

Elektronik Erişim
Access to Electronic Version.


LibraryMateryal TürüDemirbaş NumarasıYer Numarası
IYTE LibraryTezT000914QD505 .K181 2011