Aryldiazonium Salts
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Arylation of β,γ-unsaturated lactones by a Heck-Matsuda reaction: an unexpected route to aryldiazene butenolides and pyridazinones
The palladium catalysed coupling of aryldiazonium salts with β-γ-unsaturated lactones under basic conditions has been investigated. Both (3H)-furanone and α-angelicalactone were evaluated as substrates in the Heck Matsuda reaction but both failed to afford the desired arylated butenolides. Under basic conditions, β-γ-unsaturated lactones generate highly
Química Nova. Publicado em: 2010
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2. Reação de arilação de Heck regio e estereosseletiva da 3-desidroprolina com sais de arildiazonio : aplicação na sintese total de analogos neuroexcitatorios do acido acromelico / Regio and stereoselective Heck arylation of 3-dehydroprolines with aryldiazonium salts. Total synthesis of the neuroexcitatory acromelic acid analogues
The Heck arylation of chiral 3-dehydroprolines using various aryldiazonium salt resulted in the formation of a series of 4-aryl-dehydroprolines of potential biological interest. The application of aryldiazonium salt in this arylation reaction offers several advantages over traditional Heck reactions such as mild reactions conditions of phosphine-free conditi
Publicado em: 2006
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3. Arilação de Heck da N-Metoxicarbonil-2-Carboximetil-1,2,5,6-Tetraidropiridina com sais de Arildiazonio. Aplicação na sintese da (+ -)-Paroxetina / Heck arylation of the N-Methoxycarbonyl-3-Carboxymethyl-1,2,5,6-Tetrahydropyridine with aryldiazonium salts. Application to the synthesis of (+ -)-Paroxetine
A paroxetina (Paxil® e Seroxat® é o mais potente e seletivo inibidor da reabsorção de serotonina e tem sido mundialmente utilizada no tratamento da depressão, desordens compulsivas obsessivas, síndrome do pânico, fobia social, dentre outras. Apesar do desenvolvimento de inúmeras estratégias sintéticas para a preparação desta droga, a indústria
Publicado em: 2005
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4. Estudo da reação de arilação de Heck de enecarbamatos, enamidas e enoleteres endociclicos utilizando sais de diazonio
The Heck arylation of olefins with aryltriflates and arylhalides is a well-established synthetic methodology for C-C bond formation. The Heck arylation employing diazonium salts (Heck-Matsuda reaction) is a much less explored methodology but offers a number of advantages over the traditional Heck protocol. These advantages comprise its mildness, shorter reac
Publicado em: 2003
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5. Reações de Heck da N-Boc-3-pirrolina com sais de diazonio. Aplicações na sintese de arilcainatos, arilaspartatos, lactamas ariladas e do baclofeno e analogos
Heck Reaction of N-Boc-3-pyrroline with aryldiazonium salts reemerged as a very practical alternative to the "traditional" Heck protocols, which use mostly aryl triflates or aryl halides. The lactamols obtained in the Heck reaction were employed with success at the synthesis of important pharmacologically active compounds. The dehydration of the lactamols pr
Publicado em: 2001
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6. New photoactivatable structural and affinity probes of RNAs: specific features and applications for mapping of spermine binding sites in yeast tRNA(Asp) and interaction of this tRNA with yeast aspartyl-tRNA synthetase.
Aryldiazonium salts are shown to be useful as phototriggered structural probes for RNA mapping as well as for footprinting of RNA/protein interaction. In particular the yeast tRNA(Asp)/aspartyl-tRNA synthetase complex is shown to involve the variable loop face and the concave side of the L-shaped nucleic acid bound to a lipophilic area of the enzyme. When ch