Synthesis of Polyheterocyclic Tropones by [2 + 2 + 2 + 1] Carbonylative Cycloaddition of Triynes.
Sign Up to like & getrecommendations! Published in 2018 at "Organic letters"
DOI: 10.1021/acs.orglett.8b01496
Abstract: A direct synthesis of tropones (2,4,6-cycloheptatrienes) from simple preorganized triynes has been elaborated. This simple rhodium-catalyzed domino strategy allows one-pot access to fully substituted tropones in a 6-6-7-5 tetracyclic core in average to high yields. read more here.
Keywords: tropones carbonylative; synthesis polyheterocyclic; cycloaddition triynes; carbonylative cycloaddition ... See more keywords
Synthesis of polyheterocyclic 1,1-diboryltriazenes by γ-nitrogen insertion of azides into activated B-B single bonds.
Sign Up to like & getrecommendations! Published in 2020 at "Chemical communications"
DOI: 10.1039/d0cc02305a
Abstract: The γ-nitrogen insertion of arylazides into the B-B bond of electron-rich cyclic μ-hydridodiboranes stabilised by one N-heterocyclic carbene (NHC) ligand leads to the expansion of the central C3B2 ring, yielding unsymmetrical polyheterocyclic 1,1-diboryltriazenes. The 2-benzyl-bridged… read more here.
Keywords: insertion azides; nitrogen insertion; synthesis polyheterocyclic; diboryltriazenes nitrogen ... See more keywords
Synthesis of Polyheterocyclic Ring Systems Included Triazolo[1,5-a]Pyrimidine as Antioxidant Agents
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DOI: 10.1080/10406638.2020.1750042
Abstract: The highly versatile 6-cyano-5-oxo-3,5-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine (6) has been synthesized and utilized as a building block for the design of new tricyclic and tetracyclic ring system... read more here.
Keywords: triazolo pyrimidine; synthesis polyheterocyclic; ring systems; pyrimidine ... See more keywords
4,5,6,7-Tetrahydroindol-4-Ones as a Valuable Starting Point for the Synthesis of Polyheterocyclic Structures
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DOI: 10.3390/molecules26154596
Abstract: This review focuses on the synthesis of polyheterocyclic structures with a variety of medicinal and optoelectronic applications, starting from readily available 4,5,6,7-tetrahydroindol-4-one analogs. First, routes toward the 4,5,6,7-tetrahydroindol-4-one starting materials are summarized, followed by synthetic… read more here.
Keywords: ones valuable; synthesis polyheterocyclic; valuable starting; tetrahydroindol ones ... See more keywords