1504-39-8Relevant articles and documents
Dissymmetrical photodimerization of methyl 9-anthroate
Noh, Taehee,Lim, Heejun
, p. 495 - 496 (1997)
Irradiation of methyl 9-anthroate through a Uranium filter gave the 1,4-10′,9′ and 1,4-9′,10′ cyclodimers as well as the 9,10-10′,9′ cyclodimer, this is the first example of intermolecular photodimerization involving the 1, 4, 9′, and 10′ positions of meso-substituted anthracenes. These dissymmetrical cyclodimers were found to be thermally more labile than the 9,10-10′,9′ cyclodimer.
Low-Temperature Emission Spectra of 9-Alkylanthracene Esters: Dimer Photodecomposition and Monomer Pair Interactions in Polymer Hosts
Salt, Kimberly,Scott, Gary W.
, p. 9986 - 9991 (1994)
Effects due to variation in the alkyl chain length of photodimers of 9-alkylanthracene esters on their photodecomposition efficiencies at 12 K and, by implication, the photoproduct migration as a function of temperature within polymer hosts are investigated.It is shown that dimers with longer alkyl chains have a lower photodecomposition efficiency.The extent of photoproduct migration within the polymer following photodecomposition was also studied as a function of alkyl chain length.This migration and its modulation of the interaction between the separating monomers is shown to affect the emission spectrum.Thus, monomer migration was studied in temperature cycling experiments.It was also found, for the polymer hosts investigated - poly(methyl methacrylate), poly(vinyl chloride), and polystyrene - that these properties are host dependent.This result is probably due to the void space differences that exist among these polymers.
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Wilcox,C.F.,Craig,A.C.
, p. 2491 - 2494 (1961)
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A “universal” catalyst for aerobic oxidations to synthesize (hetero)aromatic aldehydes, ketones, esters, acids, nitriles, and amides
Bartling, Stephan,Beller, Matthias,Chandrashekhar, Vishwas G.,Jagadeesh, Rajenahally V.,Rabeah, Jabor,Rockstroh, Nils,Senthamarai, Thirusangumurugan
supporting information, p. 508 - 531 (2022/02/11)
Functionalized (hetero)aromatic compounds are indispensable chemicals widely used in basic and applied sciences. Among these, especially aromatic aldehydes, ketones, carboxylic acids, esters, nitriles, and amides represent valuable fine and bulk chemicals, which are used in chemical, pharmaceutical, agrochemical, and material industries. For their synthesis, catalytic aerobic oxidation of alcohols constitutes a green, sustainable, and cost-effective process, which should ideally make use of active and selective 3D metals. Here, we report the preparation of graphitic layers encapsulated in Co-nanoparticles by pyrolysis of cobalt-piperazine-tartaric acid complex on carbon as a most general oxidation catalyst. This unique material allows for the synthesis of simple, functionalized, and structurally diverse (hetero)aromatic aldehydes, ketones, carboxylic acids, esters, nitriles, and amides from alcohols in excellent yields in the presence of air.
Pd-Colloids-Catalyzed/Ag2O-Oxidized General and Selective Esterification of Benzylic Alcohols
Sable, Vaibhav,Shah, Jagrut,Sharma, Anuja,Kapdi, Anant R.
supporting information, p. 2639 - 2647 (2019/07/08)
Palladium colloids obtained from the degradation of Hermann–Beller palladacycle proved to be an efficient catalytic system in combination with silver oxide as a selective oxidant for the oxidative esterification of differently substituted benzyl alcohols in MeOH as solvent. Excellent reactivity exhibited by the catalytic system also allowed the alcoholic coupling partner to be changed from MeOH to a wide range of alcohols having diverse functionalities. The mildness of the developed protocol also made it possible to employ propargyl alcohol as the coupling partner without any observation of any interference of the terminal alkyne. Selective oxidative coupling of a primary alcoholic functional group over secondary in the case of glycols and glycerols was also made possible using the developed catalyst system. To test the relevancy of Pd/Ag combined catalysis mixed Pd/Ag colloids were synthesized, characterized by TEM, XRD and XPS and applied to oxidative-esterification successfully.