23800-57-9Relevant academic research and scientific papers
Pyrylium monolayers as amino-reactive platform
Scaramuzzo, Francesca A.,Gonzalez-Campo, Arantzazu,Wu, Chien-Ching,Velders, Aldrik H.,Subramaniam, Vinod,Doddi, Giancarlo,Mencarelli, Paolo,Barteri, Mario,Jonkheijm, Pascal,Huskens, Jurriaan
, p. 4193 - 4195 (2010)
A new monolayer platform based on pyrylium has been developed which is reactive towards amine-terminated (bio)molecules. Upon reaction, a switch in fluorescence properties of the monolayer signifies successful immobilization of these molecules.
Deaminative Arylation of Amino Acid-derived Pyridinium Salts
Hoerrner, Megan E.,Baker, Kristen M.,Basch, Corey H.,Bampo, Earl M.,Watson, Mary P.
supporting information, p. 7356 - 7360 (2019/09/30)
A Suzuki-Miyaura cross-coupling of α-pyridinium esters and arylboroxines has been developed. Combined with formation of the pyridinium salts from amino acid derivatives, this method enables amino acid derivatives to be efficiently transformed into α-aryl
Reductive (3 + 2) Annulation of Benzils with Pyrylium Salts: Stereoselective Access to Furyl Analogues of cis-Chalcones
Tan, Pengwei,Wang, Sunewang R.
supporting information, p. 6029 - 6033 (2019/08/26)
An unprecedented reductive (3 + 2) annulation of both symmetrical and unsymmetrical benzils with pyrylium salts mediated by P(NMe2)3 is described, leading to facile and stereoselective access to the challenging cis-chalcones decorate
A rapid approach toward synthesis of 1,3,5-triarylpent-2-ene-1,5-diones catalyzed by KF/Al2O3 and PEG-400 using microwave irradiation
Song, Mingzhi,Fan, Chuangang
, p. 27 - 30 (2013/07/26)
A rapid and efficient method for the synthesis of 1,3,5-triarylpent-2-ene- 1,5-diones is described based on a low-cost and environmentally benign KF/Al2O3 and PEG-400 co-catalyst catalyst via open-ring reactions of 2,4,6- triarylpyrylium salts compounds under microwave irradiation conditions. The advantage of this method is satisfactory yields, short reaction time and the use of a cheaper, milder, and efficient catalyst. Finally, twelve α, β-unsaturated diones have been obtained in good to excellent yields by this procedure.
A facile synthesis of 3,5,7-trisubstituted-4H-[1,2]diazepines by microwave irradiation
Manih, Rudolf Manton,Myrboh, Bekington
, p. 1613 - 1618 (2013/01/15)
A novel approach for the synthesis of 3,5,7-trisubstituted-4H-[1,2] diazepine 5a-p from α,β-unsaturated 1,5-diketone 4 by the condensation of substituted acetophenones 1 with 1,3-dicarbonyl compound 3 in the presence of sodium tertiary butoxide has been described. The intermediate 4 reacts smoothly with hydrazine hydrate catalysed by PSSA in water under microwave irradiation to yield the product 5.
Free radicals: XXVIII. Reaction of 2,4,6-triphenylpyranyl with (diacetoxy-λ3-iodanyl)benzene
Tanaseichuk,Pryanichnikova,Burtasov,Lisina,Dolganov
experimental part, p. 442 - 445 (2011/06/23)
The major product of the reaction of 2,4,6-triphenylpyranyl with (diacetoxy-λ3-iodanyl)benzene in acetonitrile and acetone was 2,4,6-triphenylpyrylium acetate. Analogous reaction in isopropyl alcohol resulted in the formation of methane, carbon dioxide, 1,3,5-triphenylpent-2-ene- 1,5-dione, 2-benzoyl-3,5-diphenylfuran, 1,3,5-triphenylpenta-2,4-dien-1-one, and a small amount of 2,4,6-triphenylpyrilium acetate.
Microwave-promoted and Lewis acid catalysed synthesis of 2,4,6-triarylpyridines using urea as benign source of ammonia
Borthakur, Moyurima,Dutta, Mandakini,Gogoi, Shyamalee,Boruah, Romesh C.
body text, p. 3125 - 3128 (2009/06/06)
An efficient method for the synthesis of 2,4,6-triarylpyridines via microwave-promoted and BF3·OEt2-catalysed one-pot reaction of ω-pyrrolidinoacetophenone with chalcone is reported. This method illustrates urea as an environmentally
Sml3 mediated reginospecific Michael addition of ω-bromo-acetophenone to α,β-unsaturated alkynones
Zheng, Xingliang,Zhang, Yongmin
, p. 412 - 413 (2007/10/03)
Sml3 mediated regiospecific Michael addition of ω-bromo-acetophenone to α,β-unsaturated alkynones was investigated. A new method for the synthesis of 1,5-dicarbonyl compounds was put forward. This reaction suffers from the influence of solvents seriously.
Pyridinethiones, X. - Preparation of Pentene-1,5-dione Enolates and of 3-Benzoyl-2(1H)-pyridinethiones
Becher, Jan,Asaad, Fahmy M.,Winckelmann, Ib
, p. 620 - 627 (2007/10/02)
An effective synthesis of 3-benzoyl-2(1H)-pyridinethiones 5a-n from stable enol salts 4 of pentene-1,5-diones and isothiocyanates is described.An attempt to prepare a 3-acetyl-2(1H)-pyridinethione from the cyano compound 7 and CH3MgX yielded the ketimine
