3059-23-2Relevant academic research and scientific papers
Photochemical Rearrangement of Some Cyclobutene-1,2-diones in the Presence of Cyclopentadiene: A Mechanistic Study
Miller, Robert D.,Kirchmeyer, Stephan
, p. 90 - 94 (1993)
The irradiation of a variety of substituted cyclobutene-1,2-diones in the presence of cyclopentadiene leads to the formation of 1:1 adducts which contain the basic 5-spirocyclopropyl Δα,β-butenolide unit.The structural similarity of these adduc
Thioether- and sulfone-functionalized dibenzopentalenes as n-channel semiconductors for organic field-effect transistors
Hermann, Mathias,Wu, Ruihan,Grenz, David C.,Kratzert, Daniel,Li, Hanying,Esser, Birgit
, p. 5420 - 5426 (2018)
Dibenzo[a,e]pentalenes (DBPs) are promising candidates to be used as ambipolar or n-type semiconductors in organic field-effect transistors (OFETs). For n-channel conduction, low LUMO energy levels are required. Furthermore, a close molecular packing in t
Switching from Single to Simultaneous Free-Radical and Anionic Polymerization with Enamine-Based Organic Electron Donors
Broggi, Julie,Canard, Gabriel,Charles, Laurence,Gigmes, Didier,Rollet, Marion,Vanelle, Patrice,Zhao, Yuxi
supporting information, p. 19389 - 19396 (2021/07/26)
Although most monomers can polymerize through different propagation pathways, polymerization-initiating systems that can switch from one mode to another are rare. In this study, we demonstrate that enamine-based organic electron donors (OEDs) constitute the first systems able to initiate either free-radical or anionic polymerization under simple, mild, and safe conditions. While direct electron-transfer reduction of monomers by OEDs results in the initiation of anionic chain-growth polymerization, introduction of a competing oxidant with a higher reduction potential than the monomer switches the former anionic propagation to a clean radical-propagation process. The benefit of this dual-mode activator is highlighted in the synthesis of an interpenetrating polymer network through simultaneous initiation of radical and anionic propagation processes.
Convenient synthetic methods to C2 symmetric 3,4-diphenylpyrrolidines
Rao, Vutukuri Dharma,Periasamy, Mariappan
, p. 703 - 706 (2007/10/03)
Convenient methods of synthesis of racemic and optically pure 3,4- diphenylpyrrolidine derivatives, involving oxidative coupling of ethyl phenylacetate using TiCl4/Et3N and reduction of the dl-2,3-diphenylsuccinic acid or the corresponding cyclic imide with NaBH4/I2 reagent in crucial steps, are described.
Rhodium Carbonyl Catalyzed Carbonylation of Unsaturated Compounds. 2. Synthesis of 5-Alkoxy-2(5H)-furanones by the Carbonylation of Acetylenes in Alcohol
Mise, Takaya,Hong, Pangbu,Yamazaki, Hiroshi
, p. 238 - 242 (2007/10/02)
The carbonylation of diphenylacetylene (1a) in ethanol in the presence of Rh4(CO)12/Na2CO3 as a catalyst gave 5-ethoxy-3,4-diphenyl-2(5H)-furanone (3b) in a 72percent yield, together with 3-(ethoxycarbonyl)-2-phenylindanone (11percent) and diethyl 2,3-dip
Photochemical Reaction of Ethyl 3-Oxo-2,4-diphenylbutanoate
Yoshioka, Michikazu,Osawa, Haruhiko,Fukuzawa, Shinji
, p. 877 - 879 (2007/10/02)
Irradiation of ethyl 3-oxo-2,4-diphenylbutanoate in hexane gave the products formed by recombination of the radicals (Ph-CH2 and/or Ph-CH-CO2Et)resulting from decarbonylation, together with small amounts of 1,2-diphenylethanol and ethyl α-hydroxyphenylacetate, whereas in benzene no 1,2-diphenylethanol was found.Under oxygen an increased amount of ethyl α-hydroxyphenylacetate and no radical recombination products were observed.
RHODIUM CARBONYL-CATALYZED CARBONYLATION OF ACETYLENES IN ALCOHOL. SYNTHESIS OF 5-ALKOXY-2(5H)-FURANONES.
Mise, Takaya,Hong, Pangbu,Yamazaki, Hiroshi
, p. 993 - 996 (2007/10/02)
Reactions of internal acetylenes with CO in alcohols gave 5-alkoxy-3,4-disubstituted-2(5H)-furanones in good yields in the presence of rhodium catalysts containing basic alkali metal salts, e.g., Rh4(CO)12 or RhCl2*3H2O in combination with sodium carbonat
