702-50-1Relevant academic research and scientific papers
Acylative desymmetrization of cyclic meso-1,3-diols by chiral DMAP derivatives
Mandai, Hiroki,Hironaka, Tsubasa,Mitsudo, Koichi,Suga, Seiji
supporting information, p. 471 - 474 (2021/03/15)
An efficient enantioselective acylative desymmetrization of cyclic meso-1,3-diols was developed by using a chiral DMAP derivative 1e having a 1,1¤-binaphthyl unit. The reactions required only 0.5mol% of the catalyst and showed good to excellent enantioselectivity. With this transformation, 5a, a key building block for the synthesis of natural products, was easily obtained in almost enantiomerically pure form after a single recrystallization. Control experiments revealed that tert-alcohol units on the catalyst were responsible for both the catalytic activity and enantioselectivity.
A structurally flexible triazolate-based metal-organic framework featuring coordinatively unsaturated copper(i) sites
Schmieder,Denysenko,Grzywa,Magdysyuk,Volkmer
, p. 13853 - 13862 (2016/09/09)
The novel metal-organic framework CFA-8 (Coordination Framework Augsburg University-8), [Cu2(tqpt)], containing the organic linker H2-tqpt {H2-tqpt = 6,6,14,14-tetramethyl-6,14-dihydroquinoxalino[2,3-b]phenazinebis-triazol
SUBSTITUTED BICYCLIC HETEROARYL COMPOUNDS AS RXR AGONISTS
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Paragraph 0444, (2016/12/01)
The present invention relates to certain substituted bicyclic compounds that are agonists of RXR and which are therefore useful in the treatment of certain disorders that can be prevented or treated by activation of this receptor. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders.
On the homoconjugation between donor and acceptor fragments. Synthesis and properties of bishomosquaric acid derivatives
Gleiter, Rolf,Doerner, Thomas,Irngartinger, Hermann
, p. 381 - 391 (2007/10/03)
The tetraketone 3,3,6,6-tetramethylcyclohexane-1,2,4,5-tetrone (11) and its congener bicyclo[3.2.2]nonane-6,7,8,9-tetrone (17) were synthesized by conventional procedures. The photoreaction of 11 and 17 with tetramethylethylene yields 3,3,4,4,7,7,10,10-oc
Structure Elucidation of Some Product Obtained by Acid-Catalyzed Condensation of Indole with Acetone
Bergman, Jan,Norrby, Per-Ola,Tilstam, Ulf,Venemalm, Lennart
, p. 5549 - 5564 (2007/10/02)
Acid-induced condensation reactions between indole and acetone have been invetigated under different reaction conditions.The structures of the 2:2 condensation products have been elucidated and supported by independent syntheses.A new acid-induced annulat
Hydrogenolysis of Small Cycloalkanes, XV. - Hydrogenation of Dispirodeca-4,9-diene
Kiwus, Regina,Schwarz, Wolfgang,Rossnagel, Ingrid,Musso, Hans
, p. 435 - 438 (2007/10/02)
On hydrogenation of the title compound 1 with Pd/C 1,4-diethylbenzene (2) is formed in 95percent yield, furthermore 1percent of cis- and 2percent of trans-1,4-diethylcyclohexane (3 and 4) as well as 2percent of 6-ethylspirooctane (15) are found.With Pt/C the intermediates 7, 12, 13, and 14 and up to 45percent of dispirodecane (17) are identified. 17 is hydrogenated with PtO2 in acetic acid to form 1,1,4,4-tetramethylcyclohexane (19).
ION PAIRING AND REACTIVITY OF ENOLATE ANIONS. 6. KINETICS AND THERMODYNAMICS FOR REACTION OF ALKALI ACETOACETONATES WITH ALKYL HALIDES IN DIMETHYL SULFOXIDE
Arnett, Edward M.,Maroldo, Stephen G.,Schriver, George W.,Schilling, Steven L.,Troughton, E. B.
, p. 2091 - 2099 (2007/10/02)
Rates and heats of reaction are reported for the C-alkylation of alkali salts of various symmetrical β-diketones with methyl and ethyl iodide in dimethyl sulfoxide (Me2SO).Product analysis by FT-NMR established that the reactions were clean over the concentration range of the kinetic and thermodinamical study and, with only one exception, gave 100 percent carbon alkylation within the limits of detection.The effects of ion pairing, temperature, and alkylating agent were probed to yield an extensive comparison of the effects of structural change on the kinetics of alkylation with methyl or ethyl iodide.The formation of 3-methyl-3-ethylacetylacetonate by alternative routes (methylation of potassium 3-ethylacetoacetonate and ethylation of potassium 3-methylacetylacetone allows an unprecedented comparison of the energetics of each step along the reaction profile from isomeric reactants in the gas phase, through isomeric transition states, to a common product in Me2SO solution.
ORGANOALUMINIUM REAGENTS INDUCED ISOMERISATION OF 5-HYDROXY-3,3,6-TRIMETHYL-5-HEPTENOIC ACID δ-LACTONE TO 2,2,5,5-TETRAMETHYL-1,3-CYCLOHEXANEDIONE
Tomioka, Hiroki,Oshima, Koichiro,Nozaki, Hitoshi
, p. 99 - 100 (2007/10/02)
Treatment of the title lactone and the related δ or ε-lactones with Et2AlSR (R = Et or Ph) gave 1,3-cyclohexanediones or 1,3-cycloheptanediones in excellent yields.
