34587-61-6Relevant articles and documents
Nickel/Photo-Cocatalyzed C(sp2)-H Allylation of Aldehydes and Formamides
Fan, Pei,Wang, Rui,Wang, Chuan
supporting information, p. 7672 - 7677 (2021/10/12)
Herein we report a nickel/photo-cocatalyzed C(sp2)-H allylation of aldehydes and formamides wherein both allyl acetates and allyl alcohols can be used as the allylating agents. In this reaction, radical-type umpolung of the formyl moiety is enabled by tetrabutylammonium decatungstate as a hydrogen-atom-transfer photocatalyst, whereas nickel serves to cleave the C-O bond of allyl acetates or allyl alcohols. The synergistic effect of these two catalysts provides new access to various β,γ-unsaturated ketones and amides with high selectivities.
Synthesis of E-α,β-unsaturated ketones with complete stereoselectivity via sequential aldol-type/elimination reactions promoted by samarium diiodide or chromium dichloride
Concellón, José M.,Rodríguez-Solla, Humberto,Concellón, Carmen,Díaz, Pamela
, p. 837 - 840 (2007/10/03)
E-α,β-Unsaturated ketones can be obtained with complete E-selectivity by a sequential reaction of dichloroketones with a variety of aldehydes. This transformation was promoted by SmI2, SmI2 in the presence of FeCl3 or CrCl2. The best results were obtained when CrCl2 was used as the metallating agent. A mechanism based on a successive aldol-type reaction and a β-elimination is proposed to explain these results. Georg Thieme Verlag Stuttgart.
Hypersensitive radical probe studies of Gif oxidations
Newcomb, Martin,Simakov, Pavel A.,Park, Seung-Un
, p. 819 - 822 (2007/10/03)
Hypersensitive probes were employed in mechanistic studies of Gif oxidations. The results indicate that, unlike the case in enzyme catalyzed hydroxylation reactions, diffusively free radicals are formed in Gif oxidations of these substrates.
