25234-75-7Relevant academic research and scientific papers
Nucleophilic Addition to Tricarbonyliron Complexes of α,β-Unsaturated Ketones and the Production of 1,4-Diketones
Danks, Timothy N.,Rakshit, Devajyoti,Thomas, Susan E.
, p. 2091 - 2094 (2007/10/02)
The first examples of nucleophilic addition to tricarbonyliron complexes α,β-unsaturated ketones are described.Addition of Grignard, organolithium, and organocuprate reagents to the tricarbonyliron complex of benzylideneacetone (1) gives 1,4-diketones.The synthesis and reactivity of the tricarbonyliron complexes of PhCH=CHCOR, R=Bu (7), R=Bui (8), and R=But (9) are reported.
One-Step Synthesis of 1,4-Diketones by Nucleophilic Reaction to Tricarbonyl Complexes of α,β-Unsaturated Ketones
Kitahara, Haruo,Tozawa, Yasuyuki,Fujita, Seikou,Tajiri, Akio,Morita, Noboru,Asao, Toyonobu
, p. 3362 - 3364 (2007/10/02)
Tricarbonyliron complexes of 3-buten-2-one, 3-penten-2-one, and 4-phenyl-3-buten-2-one reacted with organolithium and Grignard reagents to afford 1,4-diketones in one step, some of the products are amenable to convertion to natural products.
(Phosphine)carbonylnitrosylacylcobaltate Complexes as Acyl Transfer Reagents. Acylation of Allylic Halides, Conjugated Enones, and Quinones
Hegedus, Louis S.,Perry, Robert J.
, p. 4955 - 4960 (2007/10/02)
The complex Co(NO)(CO)2(PPh3) is an air stable, easily handled crystalline solid, prepared from Co2(CO)8, sodium nitrite, and triphenylphosphine without isolation of the volatile intermediate Co(NO)(CO)3.Treatment of this complex with organolithium reagents at -40 deg C generated unstable acylate complexes - which readily transferred the acyl group to allylic halides to produce β,γ-unsaturated ketones, to conjugated ketones to produce 1,4-dicarbonyl compounds, and to quinones to form 4-acylcyclohexadienones.
Process for the preparation of ketones
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, (2008/06/13)
The invention concerns a new process for the preparation of ketones; according to this process ketones are prepared from aldehydes and unsaturated compounds in the presence of bases using quaternary ammonium salts as catalysts.
