265671-00-9Relevant academic research and scientific papers
One-pot homo- and cross-coupling of diazanaphthalenes via C-H substitution: Synthesis of Bis- and Tris-diazanaphthalenes
Ucar, Sefa,Dastan, Arif
supporting information, p. 4013 - 4022 (2020/09/21)
The transition metal-free coupling reactions of unactivated diazanaphthalenes were studied using only lithium tetramethylpiperidine (LiTMP) reagent. Symmetrical and nonsymmetrical bis-diazanaphthalenes were synthesized in moderate to high yield by homo- and cross-coupling of related monomers. In addition, the single-step synthesis of diquinoxalino [2,3-a: 2', 3'c] phenazine and 2,2': 3', 2″ - terquinoxaline using the appropriate equivalent amount of LiTMP was performed. The products were characterized by means of NMR spectroscopy and HRMS spectrometry.
Synthesis and reactivity of cinnoline-fused cyclic enediyne
Vinogradova, Olga V.,Balova, Irina A.,Popik, Vladimir V.
experimental part, p. 6937 - 6941 (2011/10/05)
A short and efficient synthesis of cinnoline-fused cyclic enediyne is reported. Richter cyclization of o-(1,3-butadiynyl)phenyltriazene produced 3-alkynyl-4-bromocinnoline. The Sonogashira coupling of the latter with 5-hexyn-1-ol was employed for the intr
An open-and-shut strategy: Preparation of benzo-fused indanes by ring-opening of a vinylogous acyl triflate and metal-catalyzed Asao-Yamamoto benzannulation
Jones, David M.,Dudley, Gregory B.
scheme or table, p. 4860 - 4866 (2010/08/06)
A two-step strategy for the synthesis of benzo-fused indanes is outlined herein. The strategy draws on two independent methodologies: the tandem addition/fragmentation of vinylogous acyl triflates (VATs) and the intramolecular benzannulation of o-alkynylp
Efficient synthesis of a complete donor/acceptor bis(aryl)diyne family
Holmes, Brian T.,Pennington, William T.,Hanks, Timothy W.
, p. 2447 - 2461 (2007/10/03)
A facile route to a family of bis(aryl)diynes containing both an electron donating pyridine ring and an electron accepting iodobenzene has been developed. The convergent synthesis involves the coupling of 2-, 3-, or 4-bromopyridine with TMS-acetylene, followed by deprotection to form the first half of the molecule. Similarly, 2-, 3-, or 4-iodoaniline was coupled to TMS-acetylene after protection of the amine group as a diethyltriazine. After conversion of the triazine to an iodine, deprotection of the acetylene and formation of the corresponding bromophenyl-acetylene, the two halves of the molecule were coupled under Cadiot-Chodkiewicz conditions. Nine new compounds were prepared, each of which was found to thermally polymerize from the melt. None of the compounds underwent photochemical polymerization in the solid-state.
Carbon networks based on dehydrobenzoannulenes. 3. Synthesis of graphyne substructures
Kehoe, Joshua M.,Kiley, James H.,English, Jamieson J.,Johnson, Charles A.,Petersen, Ryan C.,Haley, Michael M.
, p. 969 - 972 (2007/10/03)
(equation presented) This Letter describes the synthesis of the first macrobicyclic subunits of the hypothetical all-carbon network graphyne. Key to synthetic success is an intramolecular Sonogashira cross-coupling sequence.
It takes alkynes to make a world - New methods for dehydrobenzoannulene synthesis
Haley, Michael M.
, p. 557 - 565 (2007/10/03)
Recent advances in the assembly of dehydrobenzoannulenes (DBAs) are the subject of this account. Using in situ generated acetylenic intermediates, novel α,ω-polyynes can be easily constructed using Pd-catalyzed alkynylation methodology. Subsequent cyclization via intra- and intermolecular Cu-mediated reactions can provide a wide variety of DBAs, including heretofore inaccessible topologies, systems with an unprecedented number of acetylenic linkages, structures with derivatized aromatic rings, and unusual organometallic species.
