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作者:E.A. Petrushkina , S.A. Chae , S.-C. Shim
来源:[J].Inorganic Chemistry Communications(IF 2.016), 1998, Vol.1 (8), pp.284-288
摘要:Abstract(#br)It was shown that the reaction of anilines, possessing double bonds in an inside chain (such as N -(2,7-dimethyloctadiene-2,7-yl-1)aniline ( 1a ) and N -prenylaniline ( 1b )) with triethanolamine ( 2 ) in the presence of RuCl 2 (Ph 3 P) 3 involves competition between the reactions of isomerization, hydrogenation of the double bond and heterocyclization...
作者:Kseniya N. Sedenkova , Elena B. Averina , Yuri K. Grishin ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (34), pp.4927-4930
摘要:Abstract(#br)A number of nitrosonium and nitronium salts were probed as reagents for the heterocyclization of 1-bromo-1-fluorocyclopropanes in the presence of organic nitriles to give pyrimidine N -oxides. Nitronium triflate, either preformed or generated in situ from nitric ...
作者:Yurii V. Grigoriev , Sergei V. Voitekhovich , Vladimir P. Karavai ...
来源:[J].Chemistry of Heterocyclic Compounds(IF 0.634), 2017, Vol.53 (6-7), pp.670-681
摘要:This review provides comprehensive analysis of literature data on the heterocyclization reaction of primary amines, orthoesters, and azides, which can be used for the preparation of tetrazole, its 1-mono- and 1,5-disubstituted derivatives.
作者:Rinat R. Gubaidullin , Rezeda R. Khalitova , Zulfiya R. Galimshina ...
来源:[J].Tetrahedron(IF 2.803), 2018, Vol.74 (15), pp.1888-1899
摘要:Abstract(#br)A direct and atom-economical synthetic route to new [3,2-b] furan-fused pentacyclic triterpenoids has been developed, using gold-catalyzed 5-exo-dig heterocyclization of accessible 2-alkynyl derivatives of betulonic, ursonic, and oleanonic acids.
作者:Weijia Xie , Genzoh Tanabe , Hiroyuki Morimoto ...
来源:[J].Tetrahedron(IF 2.803), 2010, Vol.66 (38), pp.7487-7491
摘要:Abstract(#br)Reexamination of heterocyclization of an enantiopure C 2 -symmetric bis-epoxide ( 7 ) with sodium sulfide is described. In addition to the reported processes leading to thiane ( 4a ) and thiepane ( 6 ), another mode of cyclization was found to occur to a considerable...
作者:Pavel V. Pasternak , Boris B. Averkiev , Michail Yu. Antipin ...
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 2004, Vol.125 (12), pp.1853-1868
摘要:... By heterocyclization of these new ethylenes with 3-methyl-2-pyrazoline-5-ones, 3(5)-aminopyrazoles, dimedone, 2-aminopyridines, 1-aryl-3-methyl-5-aminopyrazoles, 1,3,3-trimethylisoquinolines, as well as by condensation with anilines and ketones, the difluoromethylphosphonate-...
作者:A. P. Krinochkin , D. S. Kopchuk , N. V. Chepchugov ...
来源:[J].Russian Journal of Organic Chemistry(IF 0.513), 2017, Vol.53 (7), pp.963-970
摘要:A series of substituted pyridine-2-carbaldehydes were brought into heterocyclization with isonitrosoacetophenone hydrazones, followed by aromatization by the action of oxidants or by dehydration in boiling acetic acid. As a result, substituted 3-(pyridin-2-yl)-1,2,4-triazines or ...
作者:I.R. Siddiqui , Malik Abdul Waseem , Shayna Shamim ...
来源:[J].Tetrahedron Letters(IF 2.397), 2013, Vol.54 (32), pp.4154-4158
摘要:... The heterocyclization proceeded efficiently. [bmIm]OH played a triple role as a solvent, base as well as catalyst.
作者:Gianluigi Broggini , Simona Galli , Micol Rigamonti ...
来源:[J].Tetrahedron Letters(IF 2.397), 2009, Vol.50 (13), pp.1447-1449
摘要:... The microwave-assisted heterocyclization occurred cleanly at C-β of the allenyl group with formation of pyrazin-2-ones having an endo- or exocyclic double bond.
作者:Lidiya G Fedenok , Igor I Barabanov , Irena D Ivanchikova
来源:[J].Tetrahedron(IF 2.803), 2001, Vol.57 (7), pp.1331-1334
摘要:Abstract(#br)The possibility of the heterocyclization of vic -alkynylanthraquinonediazonium salts with the formation of a 5- or 6-membered ring, depending on the reaction conditions, is established. The heterocyclization of 2-alkynyl-9,10-anthraquinone-1-diazonium salts to form 1...

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