2008
DOI: 10.1590/s0100-40422008000400014
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Reações de oxidação de derivados de cis-octalinas promovidas por trinitrato de tálio (TTN)

Abstract: Recebido em 9/1/08; aceito em 4/3/08; publicado na web em 9/4/08 OXIDATION REACTIONS OF DERIVATIVES OF CIS-OCTALINS PROMOTED BY THALLIUM TRINITRATE (TTN).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,5,8,8a-octahydro4a-methylnaphthalene and of 1,2,3,4,4a,5,8,8a-octahydro-4a,7-dimethylnaphthalene with TTN in a… Show more

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Cited by 3 publications
(4 citation statements)
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“…52,54 The thallium(III)-mediated ring contraction of cis-octalins (cis-octahydronaphthalenes) was also investigated. Thus, the synthesis of cis-hydrindanes was achieved through the oxidative rearrangement of cis-octalins using TTN in TMOF, 64 MeOH-acetic acid (AcOH), 64 or MeCN 65 (e.g., Scheme 16). This approach is more efficient than that starting from cis-decalones (see Scheme 6).…”
Section: Scheme 13mentioning
confidence: 99%
“…52,54 The thallium(III)-mediated ring contraction of cis-octalins (cis-octahydronaphthalenes) was also investigated. Thus, the synthesis of cis-hydrindanes was achieved through the oxidative rearrangement of cis-octalins using TTN in TMOF, 64 MeOH-acetic acid (AcOH), 64 or MeCN 65 (e.g., Scheme 16). This approach is more efficient than that starting from cis-decalones (see Scheme 6).…”
Section: Scheme 13mentioning
confidence: 99%
“…The thallium(III)-mediated ring contraction of cis-octalins was also investigated. Thus, the synthesis of cis-hydrindanes was achieved through the oxidative rearrangement of cis-octalins using TTN in trimethyl orthoformate, 53 in methanol-acetic acid 53 or in acetonitrile 54 (Scheme 15). The reaction of a series of hexose and pentose glycals with TTN gives functionalized tetrahydrofurans, through a ring-contraction reaction.…”
Section: Scheme 13mentioning
confidence: 99%
“…. Estudos Visando à Oxidação de Octalinas e Metileno-ciclo-hexanos -Introdução67Trabalhos posteriores mostraram que o tratamento de cis-octalinas com TTN em metanol, trimetilortoformiato (TMOF) ou acetonitrila resulta nos cis-hindrindanos com rendimentos moderados (Tabela 16) 143,144. Tabela 16.…”
unclassified
“…Tabela 16. Reações de octalinas com TTN em diferentes solventes143,144 Na síntese diastereosseletiva da (+)-baquenolida A, nosso grupo utilizou como etapa chave a contração de anel da octalona 34a para a construção do sistema cishidrindânico 145. Foi realizado um trabalho de metodologia nessa etapa, testando condições com TTN e com reagentes de iodo(III), como o DIB.…”
unclassified