SYNTHESIS OF BENZO[ c ][1,7]NAPHTHYRIDINE DERIVATIVES
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DOI: 10.1007/5363
Abstract: Reactivity of 2-methyl-6-phenylbenzo[c][1,7]naphthyridine in alkylation, oxidation, and electrophilic substitution reactions has been studied. The reaction of 2-methyl-6-phenylbenzo[c][1,7]naphthyridines with POCl3 yielded the previously unknown 4-chloro-2-methyl-6-phenylbenzo[c]-[1,7]naphthyridine. Its dehalogenation and substitution of halogen by nitrogen and sulfur nucleophiles… read more here.
Keywords: naphthyridine derivatives; benzo naphthyridine; methyl phenylbenzo; synthesis benzo ... See more keywords
NEW APPROACH TO THE SYNTHESIS OF BENZO[ e ]PYRAZOLO[5,1- b] [1,3]OXAZINES
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DOI: 10.1007/6133
Abstract: How to Cite Osyanin, V. A.; Nakushnov, V. Yu.; Osipov, D. V.; Klimochkin, Yu. N. Chem. Heterocycl. Compd. 2010 , 46 , 1027. [ Khim. Geterotsikl. Soedin. 2010 , 1266.] For this article in the English… read more here.
Keywords: synthesis benzo; pyrazolo oxazines; chemistry; benzo pyrazolo ... See more keywords
Synthesis of benzo[c][1,7]naphthyridine derivatives
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-019-02581-8
Abstract: Reactivity of 2-methyl-6-phenylbenzo[c][1,7]naphthyridine in alkylation, oxidation, and electrophilic substitution reactions has been studied. The reaction of 2-methyl-6-phenylbenzo[c][1,7]naphthyridines with POCl3 yielded the previously unknown 4-chloro-2-methyl-6-phenylbenzo[c][1,7]naphthyridine. Its dehalogenation and substitution of halogen by nitrogen and sulfur nucleophiles… read more here.
Keywords: naphthyridine derivatives; benzo naphthyridine; methyl phenylbenzo; synthesis benzo ... See more keywords
Fe3O4@TiO2@ILs-ZIF-8 Nanocomposite: A Robust Catalyst for the Synthesis of Benzo[4,5]imidazo[1,2-a]pyrimidines
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DOI: 10.1016/j.molstruc.2021.130298
Abstract: Abstract Zeolitic imidazolate frameworks (prototype system ZIF-8) supported on the Fe3O4@TiO2@ILs magnetic nanostructure (Fe3O4@TiO2@ILs-ZIF-8) was first synthesized and it showed high catalytic activity for the one-pot synthesis of benzo[4,5]imidazo[1,2-a]pyrimidine derivatives. The multi-component reactions of various… read more here.
Keywords: benzo imidazo; tio2 ils; fe3o4 tio2; ils zif ... See more keywords
Modular Regiodivergent Synthesis of Benzo-Fused Isocoumarins by a Cyclopropane Aromatization Strategy.
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DOI: 10.1021/acs.orglett.2c02535
Abstract: Reported herein is an electrophile-modulated aromatization reaction of highly functionalized cyclopropanes to structurally diverse benzoisocoumarins featuring concurrent formation of the benzenoid and α-pyrone rings under mild conditions. An aromatization reaction of the proposed benzonorcaradiene intermediates… read more here.
Keywords: aromatization; modular regiodivergent; regiodivergent synthesis; benzo fused ... See more keywords
Synthesis of 3-Benzo[b]thienyl 3-Thienyl Ether via an Addition-Elimination Reaction and Its Transformation to an Oxygen-Fused Dithiophene Skeleton: Synthesis and Properties of Benzodithienofuran and Its π-Extended Derivatives.
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DOI: 10.1021/acs.orglett.7b00969
Abstract: The synthesis of 3-benzo[b]thienyl 3-thienyl ether and its dehydrogenative cyclization leading to benzodithienofuran (BDTF; [1]benzothieno[3,2-b]thieno[2,3-d]furan) are described for the first time. Further transformation of BDTF to more π-extended BDTF derivatives and their fundamental physical properties… read more here.
Keywords: benzo thienyl; thienyl thienyl; thienyl ether; thienyl ... See more keywords
Synthesis of Benzo[1,6]naphthyridinones Using the Catellani Reaction.
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DOI: 10.1021/acs.orglett.8b02171
Abstract: An intramolecular version of the Catellani reaction was optimized for one-step synthesis of bulky N-substituted benzo[1,6]naphthyridinones with good to excellent yields. The optimized reaction of N-substituted o-bromobenzamides with 4-bromoquinolines features a wide substrate scope and… read more here.
Keywords: catellani reaction; benzo naphthyridinones; naphthyridinones using; reaction ... See more keywords
Iodine-mediated synthesis of benzo[a]fluorenones from yne-enones
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DOI: 10.1039/c9ra02376c
Abstract: An iodine mediated synthesis of benzo[a]fluorenone derivatives from the chalcones derived from o-alkynylacetophenones and aromatic aldehydes is described. read more here.
Keywords: iodine mediated; benzo fluorenones; synthesis benzo; mediated synthesis ... See more keywords
DMSO-assisted environmentally benign synthesis of benzo[c]-chromeno[4,3,2-gh]phenanthridines by remote oxidative hetero cross-coupling cyclization and aromatization reaction.
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DOI: 10.1039/d2cc01067d
Abstract: An unprecedented metal-free and catalyst-free synthesis of benzo[c]chromeno[4,3,2-gh]phenanthridine derivatives, a class of 1,6-diheterophenalenoid heterocycle, is reported for the first time. The oxidative cross-coupling reaction for the remote cyclization is achieved through the in situ generated… read more here.
Keywords: cross coupling; reaction; benzo chromeno; aromatization ... See more keywords
Introducing a green nanocatalytic process toward the synthesis of benzo[a]pyrano-[2,3-c]phenazines utilizing copper oxide quantum dot-modified core–shell magnetic mesoporous silica nanoparticles as high throughput and reusable nanocatalysts
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DOI: 10.1039/d2ra03887k
Abstract: In this contribution, a green, simple, efficient, and straightforward nanocatalytic process was developed for the synthesis of benzo[a]pyrano[2,3-c]phenazine derivatives under mild thermal conditions. In this regard, the copper oxide quantum dot-modified magnetic silica mesoporous nanoparticles… read more here.
Keywords: benzo pyrano; synthesis benzo; nanocatalytic process;
Efficient synthesis of benzo[c]cinnolines and azoarenes via dual C−N coupling of phthalhydrazide and trivalent halogen reagents
Sign Up to like & getrecommendations! Published in 2023 at "Organic Chemistry Frontiers"
DOI: 10.1039/d3qo00391d
Abstract: Phthalhydrazide is proved to be an elegant N=N source to undergo tandem dual-C−N coupling/deprotection/oxidation with not only cyclic/linear diaryliodoniums but also rarely explored diarylbromoniums, giving benzo[c]cinnolines (up to 99% yield)... read more here.
Keywords: benzo cinnolines; dual coupling; cinnolines azoarenes; efficient synthesis ... See more keywords