SYNTHESIS OF 1,3-DIHYDRO-2 H -BENZIMIDAZOL-2-ONES
Sign Up to like & getrecommendations! Published in 2017 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/3458
Abstract: This microreview covers data regarding the synthesis of 1,3-dihydro-2 H -benzimidazol-2-ones published during the last five years. The synthetic routes to benzimidazolones can be classified into several types: cyclocarbonylation of 1,2-diaminobenzenes, transformation of benzimidazolium salts,… read more here.
Keywords: dihydro benzimidazol; benzimidazol ones; synthesis dihydro;
SYNTHESIS OF 4,5-DIHYDRO-1,4-BENZOTHIAZEPIN-3(2 H )-ONE
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DOI: 10.1007/3473
Abstract: Current microreview includes synthetic approaches for the preparation of 4,5-dihydro-1,4-benzothiazepin-3(2 H )-ones from various starting materials: 2-(aminomethyl)benzenethiol derivatives, 2-halobenzylamine derivatives, and 2-halocarbaldehydes. read more here.
Keywords: dihydro benzothiazepin; dihydro; synthesis dihydro; benzothiazepin one ... See more keywords
One‐pot synthesis of dihydro-1H-indeno[1,2-b] pyridines and tetrahydrobenzo[b] pyran derivatives using a new and efficient nanocomposite catalyst based on N‐butylsulfonate‐functionalized MMWCNTs-D-NH2
Sign Up to like & getrecommendations! Published in 2020 at "Polyhedron"
DOI: 10.1016/j.poly.2019.114179
Abstract: Abstract In this study, magnetic multi-walled carbon nanotubes were functionalized with polyamidoamine (PAMAM) dendrimers and modified with butylsulfonate to afford MMWCNTs-D-(CH2)4-SO3H. The synthesized nanocomposite (MMWCNTs-D-(CH2)4-SO3H) was characterized by various techniques such as Fourier transform infrared… read more here.
Keywords: nanocomposite catalyst; microscopy; indeno pyridines; catalyst ... See more keywords
Synthesis of 2,4-dihydro-3H-1,2,4-triazol-3-ylidene derivatives from 1,3-Indanediones
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DOI: 10.1016/j.tetlet.2021.152832
Abstract: Abstract A simple and efficient synthesis has been developed for 1,2,4-traizole derivatives from 2-arylidene-1,3-indandiones and 1-methylhydrazine-1-carbonitrile in two steps with good yields. The reactions include formal [3 + 2] cycloaddition and skeletal rearrangement to provide amino hydrazones… read more here.
Keywords: synthesis; triazol ylidene; ylidene derivatives; synthesis dihydro ... See more keywords
In(OTf)3-Catalyzed Synthesis of 2,3-Dihydro-1H-benzo[e]indoles and 2,3-Dihydrobenzofurans via [3 + 2] Annulation.
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DOI: 10.1021/acs.orglett.0c02729
Abstract: An In(OTf)3-catalyzed intermolecular [3 + 2] annulation for the synthesis of 2,3-dihydro-1H-benzo[e]indoles and 2,3-dihydrobenzofurans from readily available substrates has been achieved. This approach takes advantage of oxetane and para-quinone methide as important functional units in… read more here.
Keywords: indoles dihydrobenzofurans; otf catalyzed; annulation; benzo indoles ... See more keywords
Synthesis of Dihydro-3,1-benzoxazine Derivatives from 1,3-Amino Alcohols and N-Sulfonyl-1,2,3-triazole.
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DOI: 10.1021/acs.orglett.3c00851
Abstract: An efficient rhodium-catalyzed synthesis of dihydro-3,1-benzoxazine derivatives has been accomplished from aniline-derived 1,3-amino alcohols and N-sulfonyl-1,2,3-triazole. The developed reaction demonstrates the new reactivity of azavinyl carbenes and allows access to diverse substituted dihydro-3,1-benzoxazines in good… read more here.
Keywords: benzoxazine derivatives; sulfonyl triazole; dihydro benzoxazine; alcohols sulfonyl ... See more keywords
SnCl2-catalyzed synthesis of dihydro-5H-benzo[f]pyrazolo[3,4-b]quinoline and dihydroindeno[2,1-b]pyrazolo[4,3-e]pyridine with high fluorescence and their photophysical properties
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DOI: 10.1039/c7nj03654j
Abstract: A series of high-performance chromophores, namely pyrazoloquinoline- and pyrazolopyridine-based derivatives bearing donor–acceptor (D–A) substituent groups on the phenyl ring, was synthesized by a mild reaction. Photophysical studies, including spectral analysis and single crystal X-ray diffraction,… read more here.
Keywords: pyrazolo; pyridine; fluorescence; sncl2 catalyzed ... See more keywords
PECTIN; HETERO POLYSACCHARIDE AS A GREEN AND NATURAL CATALYST FOR THE SYNTHESIS OF DIHYDRO-2-OXOPYRROLES AND 3,4,5-TRISUBSTITUTED FURAN-2(5H)-ONES
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Chilean Chemical Society"
DOI: 10.4067/s0717-97072018000404168
Abstract: Use of green and biodegradable catalyst in organic synthesis is undeniable. Easy access, inexpensive, natural and green catalysts are valuable. In this study, a green procedure by using pectin as a green and natural catalyst… read more here.
Keywords: dihydro oxopyrroles; natural catalyst; catalyst; synthesis dihydro ... See more keywords