Cyanomethylation of the Benzene Rings and Pyridine Rings via Direct Oxidative Cross-Dehydrogenative Coupling with Acetonitrile.
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DOI: 10.1021/acs.orglett.2c00498
Abstract: A novel and efficient approach for the amine-directed dehydrogenative C(sp2)-C(sp3) coupling of arylamines with acetonitrile was reported by using FeCl2 as the catalyst. Substituted anilines, aminopyridines, naphthylamines, and some nitrogen-containing heterocyclic arylamines react with inactive… read more here.
Keywords: pyridine rings; benzene rings; rings pyridine; cyanomethylation benzene ... See more keywords
3-Position-Selective C-H Trifluoromethylation of Pyridine Rings Based on Nucleophilic Activation.
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DOI: 10.1021/acs.orglett.2c03327
Abstract: The first example of the 3-position-selective C(sp2)-H trifluoromethylation of pyridine rings was established. 3-Position-selective trifluoromethylation was achieved by the nucleophilic activation of pyridine and quinoline derivatives through hydrosilylation and successive electrophilic trifluoromethylation of the enamine… read more here.
Keywords: pyridine rings; position selective; trifluoromethylation pyridine; trifluoromethylation ... See more keywords
Streptocyanine as an activation mode of amine catalysis for the conversion of pyridine rings to benzene rings
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DOI: 10.1039/d2sc06225a
Abstract: Amine catalysts have emerged as an invaluable tool in organic synthesis. Iminium, enamine, and enamine radical cation species are representative activation modes of amine catalysis. However, the development of new amine catalysis activation modes that… read more here.
Keywords: amine catalysis; pyridine rings; activation mode; activation ... See more keywords
Tetra-2,3-Pyrazinoporphyrazines with Externally Appended Pyridine Rings 22 Synthesis, Physicochemical and Photoactivity Studies on In(III) Mono- and Heteropentanuclear Complexes
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DOI: 10.3390/molecules27030849
Abstract: The basic macrocyclic octapyridinotetrapyrazinoporphyrazine InIII complex of formula [Py8TPyzPzIn(OAc)]·8H2O, prepared by reaction of the free ligand [Py8TPyzPzH2]·2H2O with In(OAc)3, is a stable-to-air species of which the structure has been studied by its X-ray powder diffraction… read more here.
Keywords: pyridine rings; rings synthesis; appended pyridine; tetra pyrazinoporphyrazines ... See more keywords