1292816-18-2Relevant academic research and scientific papers
Base-catalysed [3 + 2] cycloaddition of propargylamines and aldehydes to substituted furans
Shen, Jinhai,Zhao, Jing,Hu, Bing,Chen, Yangxin,Wu, Longqiao,You, Qihua,Zhao, Li
, p. 600 - 603 (2018/02/14)
A base-catalysed [3 + 2] cycloaddition reaction of propargylamines and aldehydes for the regiospecific synthesis of substituted furans under metal-free conditions is developed. Propargylamines are used as allenyl anion equivalents and applied in [3 + 2] cycloaddition reactions with aldehydes. Various substituted furans are provided up to 91% yield for 28 examples.
Organic optoelectronic material and organic light-emitting device comprising same
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Paragraph 0066; 0067; 0068; 0069, (2017/06/02)
The invention relates to an organic optoelectronic material and an organic light-emitting device comprising the same. The organic optoelectronic material is as shown in the formula I, wherein Ar1, Ar2 and Ar3 are respectively selected from one of aryl group with carbon atom number ranging from 6 to 36, arylamine group with carbon atom number ranging from 6 to 40, and arylamine group with carbon atom number ranging from 6 to 40 and containing aromatic heterocyclic group; X is selected from O atom or S atom; at least one of Ar1, Ar2 and Ar3 is selected from the arylamine group with carbon atom number ranging from 6 to 40 or the arylamine group with carbon atom number ranging from 6 to 40 and containing the aromatic heterocyclic group. The organic optoelectronic material has high thermal stability and high glass transition temperature, is easy to form good amorphous thin films, can be applied to the organic light-emitting device, and especially can be used as a hole injection material applied to the organic light-emitting device. With the organic optoelectronic material, the organic light-emitting device realizes effects of high brightness, high quantum efficiency, high current efficiency, high power efficiency and low drive voltage.
Oxidative cross-coupling of allenyl ketones and organoboronic acids: Expeditious synthesis of highly substituted furans
Xia, Ying,Xia, Yamu,Ge, Rui,Liu, Zhen,Xiao, Qing,Zhang, Yan,Wang, Jianbo
supporting information, p. 3917 - 3921 (2014/05/06)
Allenyl ketones are employed as coupling partners in palladium-catalyzed oxidative cross-coupling reactions with organoboronic acids. This reaction constitutes an efficient methodology for the synthesis of highly substituted furan derivatives. Palladium-carbene migratory insertion is proposed as the key step in this transformation. Migration patterns: Allenyl ketones are employed as a coupling partner in a palladium-catalyzed oxidative cross-coupling reaction with organoboronic acids. This reaction constitutes an efficient methodology for the synthesis of highly substituted furan derivatives. Palladium-carbene migratory insertion is proposed as the key step in this transformation. BQ=1,4-benzoquinone.
Bronsted acid-catalyzed cycloisomerization of but-2-yne-1,4-diols with or without 1,3-dicarbonyl compounds to tri- and tetrasubstituted furans
Mothe, Srinivasa Reddy,Lauw, Sherman Jun Liang,Kothandaraman, Prasath,Chan, Philip Wai Hong
, p. 6937 - 6947 (2012/10/07)
A Bronsted acid-catalyzed method to prepare tri- and tetrasubstituted furans efficiently from cycloisomerization of but-2-yne-1,4-diols with or without 1,3-dicarbonyl compounds is described. By taking advantage of the orthogonal modes of reactivity of the alcoholic substrate through slight modification of the reaction conditions, a divergence in product selectivity was observed. At room temperature, p-TsOH?H 2O-mediated tandem alkylation/cycloisomerization of the propargylic 1,4-diol with the β-dicarbonyl compound was found to selectively occur to provide the tetrasubstituted furan product. On the other hand, increasing the reaction temperature to 80 °C was discovered to result in preferential p-TsOH?H2O-catalyzed dehydrative rearrangement of the unsaturated alcohol and formation of the 2,3,5-trisubstituted furan adduct.
A facile approach to highly functional trisubstituted furans via intramolecular Wittig reactions
Chen, Ko-Wei,Syu, Siang-En,Jang, Yeong-Jiunn,Lin, Wenwei
supporting information; experimental part, p. 2098 - 2106 (2011/05/08)
An efficient and mild synthesis of trisubstituted furans, starting from α,β-unsaturated ketones, tributylphosphine, and acyl chlorides, is described. The strategy employs the intramolecular Wittig protocol as a key step to install the crucial furan ring,
