73630-87-2Relevant academic research and scientific papers
Organic compound and Light emitting diode and Organic light emitting diode display device using the same
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Paragraph 0097-0100, (2016/10/10)
Provided in the present invention is an organic compound, having an electron withdrawing group-substituted structure in a benzothiophene, a benzofuran, or a benzoselenophene core, and having excellent properties of charge generation and hole injection.br
A concise synthesis of further thiophene analogues of kuanoniamine a
Hepburn, Seon A.,Jackson, Yvette A.
, p. 975 - 981 (2007/10/03)
An efficient synthesis of three novel 9H-pyrido[6,5,4-kl]thieno[3,2-i]acridin-9-ones is described. The synthesis is achieved utilizing methyl-4,7-dimethoxybenzo[b]thiophene-2-carboxylate.
Studies on quinones: Part 30. Synthesis of benzo[b]thiophene-4,7- quinones
Valderrama, Jaime A.,Valderrama, Claudio
, p. 2143 - 2157 (2007/10/03)
The synthesis of a variety of benzo[b]thiophene-4,7-quinones (4a-f) by oxidative demethylation of the corresponding 4,7-dimethoxybenzo[b]thiophenes (3a-f) with cerium (IV) ammonium nitrate is reported. Heterocycles (3a,b) were prepared by cyclization of t
GENERAL SYNTHESIS OF 2,3-SUBSTITUTED 5-MEMBERED HETEROCYCLIC QUINONES
Cherif, Mahmoud,Cotelle, Philippe,Catteau, Jean-Pierre
, p. 1749 - 1758 (2007/10/02)
4,7-dimethoxybenzofuran, -thiophene, -selenophene and 4,7-dimethoxyindole have been prepared by a two-step procedure involving a cyclization-dehydration of the acetals (1).The oxidative demethylation of 4,7-dimethoxybenzothiophene, -selenophene and
An Efficient Route to Benzothiophene Quinones, Quinone Bisketals, and Quinone Monoketals via Anodic Oxidation of Methoxylated Benzothiophenes. Studies Directed at the Synthesis of Functionalized Benzothiophene-4,7-quinones
Chenard, Bertrand L.,McConnell, J. Russell,Swenton, John S.
, p. 4312 - 4317 (2007/10/02)
A convenient route to 4-and 7-methoxybenzothiophenes has been developed in the course of electrochemical studies of these molecules.The anodic oxidations of 4-methoxy-, 5-bromo-4-methoxy-, 5-methyl-4-methoxy-, and 6-bromo-7-methoxybenzothiophene, 17a-d, respectively, in methanolic potassium hydroxide at a platinum anode have been investigated.The products obtained from the oxidation of these compounds were temperature dependent.This temperature dependence was most extensively studied for 17a wherein oxidation at or below room temperature, followed by workup, gave primarily 4,7-dimethoxybenzothiophene.However, oxidation of 17a in methanol at ca. 65 deg C gave primarily the quinone bisketal.In a similar manner oxidation of 17b,c gave the respective bisketals of benzothiophene-4,7-quinones in good yields.Extended acidic hydrolyses of these quinone bisketals afforded the corresponding quinones in 78-95 percent yield.Milder conditions for the hydrolyses afforded monoketals of benzothiophene-4,7-quinones, the products from 17b,c being formed with high regioselectivity.Other chemistry of these quinone bis- and monoketals, initially directed at a synthesis of Caldariellaquinone, is presented and discussed.
