A Facile Route to Convert Acetylacetone into Other β-Diketones with Acyl Chlorides Promoted by Samarium Triiodide

Preparation of β-Keto Esters and β-Diketones by C-Acylation/Deacetylation of Acetoacetic Esters and Acetonyl Ketones with 1-Acylbenzotriazoles

“…The enol structures of the known β-diketones 10a, 25a,b 10b, 26 and 10c 27 and the novel 10d are supported by 1 H/ 13 C NMR spectra, which show a set of singlets at δ 6.18-6.81 corresponding to the R-olefinic protons and signals at δ 92.1-96.7 assigned to the R-olefinic carbons. 28 All the β-diketones 10a-d contained the corresponding keto forms as minor tautomers.…”

Computer-Guided Design in Molecular Recognition: Design and Synthesis of a Glucopyranose Receptor

“…The synthesis of 7 is shown in Scheme . Reaction of p ‐iodobenzoyl chloride ( 11 ) with 2,4‐pentanedione ( 12 ) and samarium iodide gave the diketone 13 22. Formation of the dienolate of 13 followed by reaction with the bromide 14 , which was prepared in two steps from 2‐butyn‐1,4‐diol,23 gave 15 .…”

Palladium‐Catalyzed Oxidative Alkoxylation of α‐Alkenyl β‐Diketones to Form Functionalized Furans.

“…1-(4-Methoxyphenyl)-1,3-butanedione. 2 1-(4-Methoxyphenyl)-butane-1,3-dione was synthesized in 46 % yield as a white solid from ethyl acetate and 4-methoxyacetophenone using a procedure similar to that used to synthesize 1-phenyl-octane-1,3-dione. 1…”