Results 71 to 80 of about 196 (101)

ChemInform Abstract: THALLIUM IN ORGANIC SYNTHESIS. 57. REACTION OF CHALCONES AND CHALCONE KETALS WITH THALLIUM(III) TRINITRATE

Chemischer Informationsdienst, 1981
AbstractChalcone (I) und ihre Ketale (II) werden mit Thalliumtrinitrat (TTN) zu den Oxidationsprodukten (III) und (IV) umgesetzt.
E. C. TAYLOR, R. A. CONLEY, D. K. JOHNSON, A. MCKILLOP, M. E. FORD   +4 more
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ChemInform Abstract: Thallium Trinitrate Mediated Ring Contraction of Monocyclic Ketones: Stereochemical Aspects.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
H. M. C. FERRAZ, L. F. JUN. SILVA
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ChemInform Abstract: The Oxidation Reaction of Indoles with Thallium(III) Trinitrate.

Chemischer Informationsdienst, 1982
AbstractDie Oxidation der lndole (I) bzw. (IV) mit Thallitlmtrinitrat führt zu den Oxindolen (II) und (III) bzw. den Isatinen (V).
T. OHNUMA, H. KASUYA, Y. KIMURA, Y. BAN
openaire   +1 more source

Reaction of 3-Alkenols with Thallium Trinitrate: An Unexpected and Useful Ring Contraction

Synthetic Communications, 2000
Abstract The first thallium trinitrate (TTN) mediated ring contraction of cyclic homoallylic alcohols, using a 1:1 mixture of AcOH and H2O as solvent, is described. The reaction of two of these alcohols with excess of TTN in pentane gave α-spirocyclopentyl-γ-butirolactones in reasonable yields.
Helena M. C. Ferraz, Andréa P. Santos, Luiz F. Silva, Tiago de O. Vieira   +3 more
openaire   +1 more source

ChemInform Abstract: Rapid Regeneration of Carbonyl Compounds from Tosylhydrazones with Thallium Trinitrate (TTN).

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. WANG, J. LIN, Y. ZHENG, J. HUANG
openaire   +1 more source

Thallium trinitrate-mediated ring contraction of 1,2-dihydronaphthalenes: an approach to the synthesis of indans

Tetrahedron, 2001
Abstract Oxidation of 1,2-dihydronaphthalenes with thallium trinitrate was studied. 1,2-dihydronaphthalene, 1-methyl-1,2-dihydronaphthalene, 6- and 8-methoxy-1,2-dihydronaphthalenes gave rise to the respective ring contraction products in good yields, whereas the rearrangement was not observed using 4-methyl-1,2-dihydronaphthalene and 1-n-butyl-4 ...
Helena M.C Ferraz, Luiz F Silva, Tiago O Vieira   +2 more
openaire   +2 more sources

ChemInform Abstract: OXYTHALLATION OF FLAVYLIUM SALTS BY THALLIUM TRINITRATE: NEW SYNTHESIS OF FLAVONES

Chemischer Informationsdienst, 1979
AbstractDie Flavyliumsalze (I) werden durch Thalliumtrinitrat (TTN) zu den Flavonen (II) oxidiert, die auch aus (III) erhalten werden können.
M. MEYER‐DAYAN, B. BODO, C. DESCHAMPS‐VALLET, D. MOLHO   +3 more
openaire   +1 more source

An Unusual Reaction of Methyl 3,5-Dimethoxybenzoate with Thallium(III)Trinitrate - Trifluoro Acetic Acid

Synthetic Communications, 1983
Abstract Thallium(III)trinitrate trihydrate (TTN) is known to be a useful and extremely versatile reagent in organic synthesis.1-5 Its use has been exploited mainly in oxidation and oxidative rearrangements of chalcones, aromatic ketones and phenols. In this communication, we report an unusual reaction of polyoxygenated methylbenzoates with TTN.
B. S. Bajwa, S. V. Bhat, J. Reden, N. J. De Souza, H. W. Fehlhaber   +4 more
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ChemInform Abstract: USEFUL DETHIOACETALIZATION WITH SOFT ACID METAL SALTS: THALLIUM TRINITRATE AND MERCURIC PERCHLORATE

Chemischer Informationsdienst, 1979
AbstractDurch Tl(NO3)3 oder Hg(ClO4)2 werden aus Dithioacetalen, z.B. aus dem Steroiddithioacetal (I), die entsprechenden Carbonylverbindungen, z.B. (II), schonend und in hohen Ausbeuten regeneriert, auch in Anwesenheit von hydrolyseund oxidationsempfindlichen funktionellen Gruppen.
E. FUJITA, Y. NAGAO, K. KANEKO
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ChemInform Abstract: Reaction of 3‐Alkenols with Thallium Trinitrate: An Unexpected and Useful Ring Contraction.

ChemInform, 2000
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Helena M. C. Ferraz, Andrea P. Santos, Luiz F. Silva Jr., Tiago de O. Vieira   +3 more
openaire   +1 more source