136970-50-8Relevant articles and documents
HETEROCYCLE-CONTAINING QUINOID COMPOUND OR POLYMER AS WELL AS ITS MANUFACTURING METHOD AND ITS USAGE
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Paragraph 0082-0086, (2020/10/27)
PROBLEM TO BE SOLVED: To provide a novel heterocycle-containing quinoid compound having a narrow band gap of HOMO-LUMO. SOLUTION: A novel heterocycle-containing quinoid compound represented by the following formula (1) is prepared. (In the formula, E1 is a hetero element selected from the group consisting of a group 14 element, a group 15 element and a group 16 element, R1 to R3 is an alkyl group, a cycloalkyl group, an aryl group or a heteroaryl group, and these groups may have a substituent, n is an integer of 0 to 2. When the E1 is a group 14 element, n is 2; when the E1 is a group 15 element, n is 1; and when the E1 is a group 16 element, n is 0.) SELECTED DRAWING: None COPYRIGHT: (C)2020,JPO&INPIT
Preparation of 2,5-Bis(diarylmethylene)-2,5-dihydrothiophenes and Their Furan, Selenophene, and N-Methylpyrrole Analogs
Ishii, Akihiko,Horikawa, Yasuaki,Takaki, Ikuo,Shibata, Jun,Nakayama, Juzo,Hoshino, Masamatsu
, p. 4313 - 4316 (2007/10/02)
A series of 2,5-bis(diarylmethylene)-2,5-dihydrothiophenes and their furan, selenophene, and N-methylpyrrole analogs were synthesized in three steps either starting from 2,5-dilithiated five-membered heteroaromatics and 2 equiv of diaryl ketones or from 2,5-diaroyl five-membered heteroaromatics and 2 equiv of aryllithiums.Key Words: 2,5-dimethylene-2,5-dihydrofuran; 2,5-dimethylene-2,5-dihydrothiophene; 2,5-dimethylene-2,5-dihydroselenophene; N-methyl-2,5-dimethylene-2,5-dihydropyrrole