Zobrazeno 1 - 10
of 11 315
pro vyhledávání: '"Nitrogen Heterocycles"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2342-2348 (2024)
A straightforward protocol for the synthesis of a previously unknown [1,2,5]oxadiazolo[3,4-d][1,2,3]triazin-7(6H)-one heterocyclic system was developed. The described approach is based on tandem diazotization/azo coupling reactions of (1,2,5-oxadiazo
Externí odkaz:
https://doaj.org/article/a1d3cfd7b67245de8a2d6ceac2703428
Autor:
Javier Gómez-Ayuso, Pablo Pertejo, Tomás Hermosilla, Israel Carreira-Barral, Roberto Quesada, María García-Valverde
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1758-1766 (2024)
Piperazines and diazepines are examples of nitrogen heterocycles present in many marketed drugs highlighting their importance in the discovery of novel bioactive compounds. However, their synthesis often faces challenges, including complex functional
Externí odkaz:
https://doaj.org/article/c198f82f32d84b7ca446bd60dc5f8805
Autor:
Alberto Robazza, Anke Neumann
Publikováno v:
Bioresources and Bioprocessing, Vol 11, Iss 1, Pp 1-15 (2024)
Abstract The anaerobic digestion of aqueous condensate from fast pyrolysis is a promising technology for enhancing carbon and energy recovery from waste. Syngas, another pyrolysis product, could be integrated as a co-substrate to improve process effi
Externí odkaz:
https://doaj.org/article/d56d2a246cab4fcaacc03b5714cfc6a6
Akademický článek
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Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 1, Pp 88-93 (2024)
Syntheses of the acyclic amidinium salts, morpholinoformamidinium hexafluoridophosphate [OC4H8N—CH=NH2]PF6 or C5H11N2O+·PF6−, 1, and pyrrolidinoformamidinium hexafluoridophosphate [C4H8N—CH= NH2]PF6 or C5H11N2+·PF6−, 2, were carried out by
Externí odkaz:
https://doaj.org/article/06d1a516c9324bc59a33ac2094af78b0
Autor:
Aboubakr H. Abdelmonsef, Mohamed El-Naggar, Amal O. A. Ibrahim, Asmaa S. Abdelgeliel, Ihsan A. Shehadi, Ahmed M. Mosallam, Ahmed Khodairy
Publikováno v:
Molecules, Vol 29, Iss 23, p 5529 (2024)
A series of new quinazolin-2,4-dione derivatives incorporating amide/eight-membered nitrogen-heterocycles 2a–c, in addition, acylthiourea/amide/dithiolan-4-one and/or phenylthiazolidin-4-one 3a–d and 4a–d. The starting compound 1 was prepared b
Externí odkaz:
https://doaj.org/article/355859d9d95d421485f448069181f35e
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 19, Iss 1, Pp 1947-1956 (2023)
The synthesis of zwitterionic dithiocarboxylate adducts was achieved by deprotonating various aldiminium or 1,2,3-triazolium salts with a strong base, followed by the nucleophilic addition of the in situ-generated cyclic (alkyl)(amino) or mesoionic c
Externí odkaz:
https://doaj.org/article/72a7158a09144a47a84d5adefaad21ce
Autor:
Jueying Shi, Miao Yu, Weikang Chen, Shiji Chen, Yikang Qiu, Zhenyang Xu, Yi Wang, Guolei Huang, Caijuan Zheng
Publikováno v:
Marine Drugs, Vol 22, Iss 7, p 321 (2024)
Nitrogen heterocycles have drawn considerable attention because of their structurally novel and significant biological activities. Marine-derived fungi, especially the Aspergillus species, possess unique metabolic pathways to produce secondary metabo
Externí odkaz:
https://doaj.org/article/b6a8c52a8dc8436ebc9b419e025a155d
Publikováno v:
Chemistry, Vol 5, Iss 3, Pp 1998-2008 (2023)
Herein, we report the expansion of chemical space available from chitin, accessible via the biogenic N-platforms 3A5AF, M4A2C, and di-HAF. The biologically active heteroaromatics furo[3,2-d]pyrimidin-4-one and furo[3,2-d]pyrimidin-4-amine can be sele
Externí odkaz:
https://doaj.org/article/1510400c97d44963a76c6519b40b64aa
Publikováno v:
FirePhysChem, Vol 3, Iss 2, Pp 135-141 (2023)
Azo-bridged FOX-7 derivatives with ultra-high theoretical detonation performance were seen as potential high-performance energetic materials. So far, most of the researches were focused on the diverse oxidation reactions involving 1,1-diamino-2,2-din
Externí odkaz:
https://doaj.org/article/41cefbc623d34557b67b9a52a613a541