Cross Coupling Stille
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Stawamycin : synthetic studies / Estavamicina : estudos sinteticos
Em 1995 Miao e colaboradores relataram o isolamento da estavamicina (1), um novo produto natural, membro da família dos pirrolocetoindanos, a partir de uma cultura líquida de Streptomyses sp., isolada de uma amostra de terra coletada na Índia. A estavamicina contém uma interessante subestrutura hexahidroindeno de fusão de anel trans com 5 centros estere
Publicado em: 2008
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2. Sintese e heterogeneização de complexos de paladio : aplicação em reações de acoplamento C-C / Synthesis and heterogeneization of palladium complexes : application in C-C cross-coupling reactions
In this work, palladium complexes, in which phosphored ligands are anchored to cyclophosphazenes were synthesized. These complexes, in solution or immobilized in inorganic matrices, were tested in the Suzuki cross-coupling reaction (between phenylboronic acid and bromobenzene, for example), the Stille cross-coupling reaction (between tributylvinyltin and
Publicado em: 2007
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3. SÃntese de GlicopiranosÃdeos 2,3 - insaturados acoplados a heterociclos em C-4. FuncionalizaÃÃo da posiÃÃo C-5 de glicoheterociclos 4â â (5 â halo â uracil â l â il) atravÃs de reaÃÃes catalisadas por Pd (0)
In the last years, catalytic reactions promoted by palladium(0) complexes have been successful used in some couplings reactions between carbohydrates and heterocycles compounds like nucleophiles for the synthesis of nucleosides and nucleotides with interesting antiviral and antitumor activities. During the last 20 years, palladium(0) complexes have also been
Publicado em: 2007
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4. Total synthesis of (+)-crocacins "C" and"D": synthesis of the 6,6-spiroketals / Sintese total das (+)-crocacinas C e D : sintese dos fragmentos 6,6-espirocetal das espirofunginas A e B
Chapter 1 describes the asymmetric total synthesis of (+)-crocacin C (1.3) and D (1.4). The convergent total synthesis of (1.3) relies on the use of a regio- and stereoselective epoxidation of an allylic alcohol with m-CPBA followed by epoxide opening with Me2CuCNLi2 and a Stille cross-coupling between (E)-vinyl stannane (1.111) and (E)-vinyl iodide (+)-(1.1
Publicado em: 2004