Electroreduction of diesters [(RCOO)-C-1(CH2)(2)OCOR2] with Mg electrode has been found to give the corresponding unsymmetrical 1,2-diketones ((RCOCOR2)-C-1) with excellent yields. (C) 1997 Elsevier Science Ltd.
Über die präparative Nutzung der Thiazoliumsalz-katalysierten Acyloin- und Benzoin-Bildung; II<sup>1</sup>. Herstellung unsymmetrischer Acyloine und α-Diketone
作者:Hermann STETTER、Georg DÄMBKES
DOI:10.1055/s-1977-24413
日期:——
A Highly Efficient Ruthenium-Catalyzed Rearrangement of α,β-Epoxyketones to 1,2-Diketones
作者:Chia-Lung Chang、Manyam Praveen Kumar、Rai-Shung Liu
DOI:10.1021/jo0303867
日期:2004.4.1
TpRuPPh3(CH3CN)2PF6 catalyzed the efficient rearrangement of α,β-epoxyketones to 1,2-diketones. Unlike a previously reported iron catalyst, the reaction in this case is applicable not only to 1,2-disubstituted epoxides but also to mono- and trisubstituted epoxides and tolerates oxygen functionalities. The sterically crowded and highly basic tris(1-pyrazolyl)borate (Tp) ligand of the ruthenium catalyst