93624-01-2Relevant articles and documents
α-Xanthylmethyl Ketones from α-Diazo ketones
López-Mendoza, Pedro,Miranda, Luis D.
, p. 3777 - 3790 (2021/07/07)
A simple and efficient method to obtain α-xanthylmethyl ketones from α-diazo ketones is described. The reaction proceeds through a protonation/nucleophilic substitution sequence in the presence of p -toluenesulfonic acid and potassium ethyl xanthogenate as the nucleophile. As α-diazo ketones can be readily synthesized from ubiquitous carboxylic acids, a broad variety of xanthates can be obtained, including examples from naturally occurring substrates.
Synthesis of pyrazolylvinyl ketones from furan derivatives
Sawengngen, Nattawut,Chalikidi, Petrakis N.,Araby, Sara,Hampel, Frank,Gmeiner, Peter,Serdyuk, Olga V.
supporting information, p. 4850 - 4855 (2019/05/24)
A new protocol for the synthesis of pyrazol-5-ylvinyl ketones, e.g. pyrazole-chalcones, employing furfuryl ketones as a triketone equivalent, has been developed. The reaction occurs under mild conditions and does not require the use of expensive materials
Flexible routes to thiophenes
Jullien, Helene,Quiclet-Sire, Beatrice,Tetart, Thomas,Zard, Samir Z.
supporting information, p. 302 - 305 (2014/01/23)
Three convergent routes to thiophenes are described, hinging on the radical addition of α-xanthyl ketones to ethyl vinyl sulfide or to vinyl pivalate. The latter route ultimately proved to be the most versatile and efficient (61-94%).