96166-05-1Relevant academic research and scientific papers
Creation of Highly Reducible CuO Species by High-Temperature Calcination of a Cu-Al Layered Double Hydroxide: Selective Hydrogenation of Furfural into Furfuryl Alcohol with Formic Acid
Hara, Takayoshi,Ichikuni, Nobuyuki,Kojima, Takashi,Kurniawan, Enggah,Permana, Yessi,Shimazu, Shogo
, p. 121 - 128 (2022/02/07)
Highly reducible CuO species were created by the calcination of a Cu-Al layered double hydroxide (CuAl LDH) at 1073 K under air. After this heat treatment, the original layered double hydroxide structure was completely transformed into CuO and CuAl2O4 phases. The synthesized calcined CuAl LDH (calc-CuAl LDH) promoted the catalytic hydrogenation of furfural (FALD) into furfuryl alcohol (FOL) with formic acid (FA) as a hydrogen donor. In the initial stage of the above catalytic reaction, the CuO species in the calc-CuAl LDH matrix transformed into active Cu0 species via the formation of a Cu(HCOO)2-1,4-dioxane complex in the liquid phase. The spent catalyst was also reusable without loss of its high catalytic performance.
Arenophile-Mediated Dearomative Reduction
Okumura, Mikiko,Nakamata Huynh, Stephanie M.,Pospech, Jola,Sarlah, David
, p. 15910 - 15914 (2016/12/16)
A dearomative reduction of simple arenes has been developed which employs a visible-light-mediated cycloaddition of arenes with an N-N-arenophile and in situ diimide reduction. Subsequent cycloreversion or fragmentation of the arenophile moiety affords 1,3-cyclohexadienes or 1,4-diaminocyclohex-2-enes, compounds that are not synthetically accessible using existing dearomatization reactions. Importantly, this strategy also provides numerous opportunities for further derivatization as well as site-selective functionalization of polynuclear arenes.
Synthetic studies on the ingenane diterpenes. An improved entry into a trans-intrabridgehead system.
Rigby, James H,Bazin, Berangere,Meyer, J Hoyt,Mohammadi, Farahnaz
, p. 799 - 801 (2007/10/03)
[reaction: see text] The efficient construction of an ingenol intermediate exhibiting insideminus signoutside intrabridgehead stereochemistry is reported. The sequence features the net conversion of a cis-intrabridgehead compound into a highly strained trans-species via palladium-mediated isomerization of an allylic epoxide followed by a low-temperature alkoxide-accelerated 1,5-hydrogen migration.
Regioselectivity of the Intermolecular Diels-Alder Reaction of Acyl Nitroso Compounds (C-Nitrosocarbonyl Compounds) and Nitrosoformates (O-Nitrosocarbonyl Compounds). Preparation of Functionalized cis-Δ6-1-Octalones
Boger, Dale L.,Patel, Mona,Takusagawa, Fusao
, p. 1911 - 1916 (2007/10/02)
A study of the regioselectivity of the intermolecular Diels-Alder reaction of (nitrosocarbonyl)benzene and methyl nitrosoformate with representative electron-rich and electron-deficient 2-substituted 1,3-cyclohexadienes is described.The observed results are consistent with the prediction that nitrosocarbonyl compounds behave as dependable electron-deficient 2? components in a normal (HOMOdiene controlled) Diels-Alder reaction with electron-rich 2-substituted dienes and additionally illustrate that they may serve as useful 2? components in regioselective Diels-Alder reactions with electron-deficient 2-substituted 1,3-cyclohexadienes.The latter results are consistent with either a normal (HOMOdiene controlled) or inverse electron demand (LUMOdiene controlled) Diels-Alder reaction.Utilization of the nitrosocarbonyl Diels-Alder adducts in a stereospecific preparation of functionalized, cis-Δ6-1-octalone is detailed.In contrast to predictions based on secondary orbital control (allylic axial heteroatom orbital control), cycloaddition of butadiene with the 5- and 6-substituted N-benzoyl 3-aza-2-oxobicyclooct-5-enes occurs on the face bearing the RCON-O bridge.
