Results 1 to 10 of about 196 (101)

Hexakis(dimethyl sulfoxide-κO)thallium(III) trinitrate [PDF]

Acta Crystallographica Section E, 2010
The title compound, [Tl(C2H6OS)6](NO3)3, consists of six dimethyl sulfoxide (DMSO) molecules coordinated to a TlIII atom, which lies on a overline{3} axis, and three nitrate anions (3. symmetry) to neutralize the charge.
Mohammad Ghadermazi, Faranak Manteghi
doaj   +6 more sources

Thallium trinitrate mediated ring contraction of cis-2-decalones [PDF]

Journal of the Brazilian Chemical Society, 2001
The reaction of some cis-2-decalones with TTN in CH2Cl2 at room temperature was investigated. The ring contraction reactions occurred in good yields, however the regio- and diastereoselectivity were low.
Ferraz Helena M. C., Silva Jr. Luiz F.
doaj   +3 more sources

Rearrangement of beta,gamma-unsaturated esters with thallium trinitrate: synthesis of indans bearing a beta-keto ester moiety [PDF]

Journal of the Brazilian Chemical Society, 2006
The rearrangement of beta,gamma-unsaturated esters, such as 2-(3,4-dihydronaphthalen-1-yl)-propionic acid ethyl ester, with thallium trinitrate (TTN) in acetic acid leads to 3-indan-1-yl-2-methyl-3-oxo-propionic acid ethyl ester in good yield, through a ...
Silva Jr. Luiz F., Pedrozo Eliane C., Ferraz Helena M. C.   +2 more
doaj   +4 more sources

Reações de oxidação de derivados de cis-octalinas promovidas por trinitrato de tálio (TTN) Oxidation reactions of derivatives of cis-octalins promoted by thallium trinitrate (TTN)

Química Nova, 2008
The reaction of ten cis-octalins and cis-octalones with thallium trinitrate (TTN) leads to different products, depending mainly on the substitution pattern of the substrate. Functionalized cis-hydrindanes were obtained from the reaction of 1,2,3,4,4a,5,8,
Helena M. C. Ferraz, Vânia M. T. Carneiro, Tiago O. Vieira, Luiz F. Silva Jr.   +3 more
doaj   +2 more sources

The reaction of 1-tetralones with thallium trinitrate supported on clay: ring contraction vs a-oxidation

Journal of the Brazilian Chemical Society, 2001
The reaction of a series of 1-tetralones with thallium trinitrate supported on Montmorillonite K-10 clay led to products of ring contraction (methyl indan-1-carboxylates) and/or alpha-oxidation (2-methoxy-1-tetralones), in variable yields.
Ferraz Helena M. C., Silva Jr. Luiz F., Aguilar Andrea M., Vieira Tiago O.   +3 more
doaj   +1 more source

Oxidation of tertiary homoallylic alcohols by thallium trinitrate: fragmentation vs. ring contraction [PDF]

Journal of the Brazilian Chemical Society, 2006
The oxidation of tertiary homoallylic alcohols with thallium trinitrate (TTN) was investigated. The alcohols bearing an allylic methyl group lose a molecule of acetone via a fragmentation reaction that leads to isomeric secondary allylic alcohols as major products, together with their corresponding acetylated derivatives.
Silva Jr., Luiz F., Quintiliano, Samir A. P., Ferraz, Helena M. C., Santos, Leonardo S., Eberlin, Marcos N.   +4 more
openaire   +3 more sources

Ciclização do lapachol induzida por sais de tálio III Cyclyzation of lapachol induced by thallium salts

Química Nova, 2008
This work describes the cyclization of lapachol (1) induced by thallium triacetate (TTA) and thallium trinitrate (TTN) in several solvents using magnetic stirring and under microwave irradiation.
Carlos Magno R. Ribeiro, Pablo P. de Souza, Letícia L. D. M. Ferreira, Lia A. Pinto, Leonardo S. de Almeida, Janaina G. de Jesus   +5 more
doaj   +1 more source

Useful dethioacetalization with soft acid metal salts: Thallium trinitrate and mercuric perchlorate.

Chemical and Pharmaceutical Bulletin, 1978
Dethioacetalization with thallium trinitrate (TTN) was tried on thioacetals 3-13, and good results were obtained. Then, the utility of co-solvents to be used with methanol was checked, and a wide range of co-solvents were shown to be available. The mechanism was also discussed. Subsequently, dethioacetalization with mercuric perchlorate was found to be
EIICHI FUJITA, YOSHIMITSU NAGAO, KIMIYOSHI KANEKO   +2 more
openaire   +2 more sources

The reaction of 1-tetralones with thallium trinitrate supported on clay: ring contraction vs alpha-oxidation [PDF]

Journal of the Brazilian Chemical Society, 2001
A reacao de uma serie de 1-tetralonas com trinitrato de talio adsorvido em Montmorilonita K-10 forneceu produtos de contracao de anel (1-indanocarboxilatos de metila) e/ou a-oxidacao (2-metoxi-1-tetralonas), em rendimentos bastante variaveis.
Ferraz, Helena M. C., Silva Jr., Luiz F., Aguilar, Andrea M., Vieira, Tiago O.   +3 more
openaire   +3 more sources

Thallium trinitrate-mediated ring contraction of 1,2-dihydronaphthalenes: the effect of electron-donating and electron-withdrawing groups [PDF]

Journal of the Brazilian Chemical Society, 2005
The oxidation of a series of 1,2-dihydronaphthalenes substituted in the aromatic ring was investigated with thallium trinitrate (TTN) in methanol or in trimethylorthoformate (TMOF) as solvent. In all cases, indans are produced, although the yield varied from excellent to poor, depending on the structure of the substrate.
Silva Jr., Luiz F., Sousa, Raquel M. F., Ferraz, Helena M. C., Aguilar, Andrea M.   +3 more
openaire   +3 more sources