Results 111 to 120 of about 448 (148)

Regiospecific photohydroxyalkylation of pentafluoropyridine

Journal of Heterocyclic Chemistry, 1978
AbstractIrradiation of 1‐hydroxyalkane solutions of pentafluoropyridine in the presence of benzo‐phenone resulted in regiospecific substitution at position 4, thus forming 2,3,5,6‐tetrafluoro‐4‐(1‐hydroxyalkyl)pyridine.
Boris Sket, Marko Zupan
openaire   +1 more source

Chemistry and Dynamics of Interaction of Nucleosides with Pentafluoropyridines.

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
V V, Litvak, I Ya, Mainagashev, O G, Bukhanets   +2 more
openaire   +2 more sources

ChemInform Abstract: REGIOSPECIFIC PHOTOHYDROXYALKYLATION OF PENTAFLUOROPYRIDINE

Chemischer Informationsdienst, 1978
AbstractBei der Photolyse erhält man aus Benzophenon (II) und den Carbinolen (I) über radikalische Zwischenstufen (III) und (IV) neben den Dimeren (V) in Gegenwart von Pentafluorpyridin (VI) die Substitutionsprodukte (VII).
B. SKET, M. ZUPAN
openaire   +1 more source

Reaction of sodium diethylnitroxide with fluorobenzenes, pentafluoropyridine and halogenopyridines

Journal of Fluorine Chemistry, 1989
Abstract Treatment of pentafluoropyridine with sodium diethylnitroxide in diethyl ether gave tetrafluoropyridines 4-RC 5 F 4 N(R = ONEt 2 , NEt 2 , NHEt and O − H 2 N + Et 2 ); in the presence of p -dinitrobenzene only the hydroxylamine (R = ONEt 2 ) was detected.
Ronald Eric Banks, Waheed Jondi, Anthony Edgar Tipping   +2 more
openaire   +2 more sources

ChemInform Abstract: REACTION OF PENTAFLUOROPYRIDINE WITH BIFUNCTIONAL NUCLEOPHILES

Chemischer Informationsdienst, 1975
AbstractUnter verschiedenen Bedingungen setzt sich Pentafluorpyridin (I) mit den bifunktionellen Nucleophilen (II) zu den 4‐substituierten Derivaten (III) um.
JERZY WIELGAT, ZDZISLAW DOMAGALA
openaire   +1 more source

ChemInform Abstract: THE PENTAFLUOROPYRIDINE CATION C5F5N(1+)

Chemischer Informationsdienst, 1981
AbstractOäAsFg oxidiert Pentafluorpyridin (I) zu dem Kation (II), das sich thermisch unter Disproportionieren zu einem Gemisch des Addukts (III) mit dem (I)′ASF5‐Addukt zersetzt.
K. + ZUECHNER, T. J. RICHARDSON, O. GLEMSER, N. BARTLETT   +3 more
openaire   +1 more source

BINOL Modification via SNAr Reactions with Pentafluoropyridine

Mendeleev Communications, 2015
(R)- and (S)-binaphthyl-2,2’-diols (BINOLs) smoothly react with pentafluoropyridine without racemization to give (R)- and (S)-2,2’- bis(tetrafluoropyridin-4-yloxy)-1,1’-binaphthyls. The 2(6)-positioned pyridine fluorine atoms can be replaced with amino moieties by reactions with amines.
Konstantin Yu. Koltunov, Aleksey N. Chernov   +1 more
openaire   +1 more source

Nuclear magnetic double and triple resonance studies on pentafluoropyridine

Journal of the Chemical Society, Faraday Transactions 2, 1972
Removing the broadening effect of the 14N nucleus by strong irradiation has made it possible to determine all the relative signs of the FF coupling constants in pentafluoropyridine by double and triple resonance experiments. It is also shown that the coupling constants depend upon solvent.
V. Barboiu, J. W. Emsley, J. C. Lindon
openaire   +1 more source

Hetarenium salts from pentafluoropyridine. Syntheses, spectroscopic properties, and applications

Journal of Heterocyclic Chemistry, 2007
Abstractmagnified imageReaction of pentafluoropyridine with nucleophilic heteroaromatics such as 4‐(dimethylamino)pyridine, 4‐(pyrrolidin‐1‐yl)pyridine, 4‐(morpholin‐4‐yl)pyridine, 4‐aminopyridine, and 3,4‐diaminopyridine resulted in the formation of 4‐hetarenium substituted tetrafluoropyridines.
Andreas Schmidt, Thorsten Mordhorst, Jan Christoph Namyslo, Werner Telle   +3 more
openaire   +1 more source

Highly Functionalized Heterocycles and Macrocycles from Pentafluoropyridine

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +1 more source