Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Leonardo S. de Almeida"'
Autor:
Carlos Magno R. Ribeiro, Pablo P. de Souza, Letícia L. D. M. Ferreira, Lia A. Pinto, Leonardo S. de Almeida, Janaina G. de Jesus
Publikováno v:
Química Nova, Vol 31, Iss 4, Pp 759-762 (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. alpha-Xyloidone (2) - dehydro-alpha-lapachone - was ob
Externí odkaz:
https://doaj.org/article/5b9a348b225144ccac36e33e6fb4f883
Publikováno v:
Current Green Chemistry. 1:94-107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d392d011a17b65f39092dd5b44c55b41
https://doi.org/10.2174/2213346101999140109142834
https://doi.org/10.2174/2213346101999140109142834
Publikováno v:
Tetrahedron Letters. 56:6843-6845
The reaction of diverse alkylarenes with tribromoisocyanuric acid (0.34 mol equiv) in reflux EtOAc in the absence of any catalysts or light irradiation produced the corresponding benzyl bromides in 53–88% yield.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6961a6a84a79f25fc00681ff8296ca16
https://doi.org/10.1016/j.tetlet.2015.10.081
https://doi.org/10.1016/j.tetlet.2015.10.081
Publikováno v:
Synlett. 24:603-606
Moderately deactivated arenes are efficiently brominated by the reaction with tribromoisocyanuric acid (0.34 mol equiv) in trifluoroacetic acid at room temperature in 48–85% isolated yield. This medium avoids the polybromination of the substrate,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c00645c4e228b3cade91bf662b55fe04
https://doi.org/10.1055/s-0032-1317795
https://doi.org/10.1055/s-0032-1317795
Autor:
Pierre M. Esteves, Gabriela F. Mendonça, Marcio C. S. de Mattos, Leonardo S. de Almeida, Rodrigo da Silva Ribeiro
Publikováno v:
ChemInform. 47
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8650216ec9643e8f6e260a235c9e6646
https://doi.org/10.1002/chin.201618256
https://doi.org/10.1002/chin.201618256
Publikováno v:
ChemInform. 47
The reaction of diverse alkylarenes with tribromoisocyanuric acid (0.34 mol equiv) in reflux EtOAc in the absence of any catalysts or light irradiation produced the corresponding benzyl bromides in 53–88% yield.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31cf9c0cbae75afd09ffe8c6fb9458dd
https://doi.org/10.1002/chin.201613044
https://doi.org/10.1002/chin.201613044
Publikováno v:
Tetrahedron Letters. 50:3001-3004
The reaction of deactivated arenes with tribromoisocyanuric acid (TBCA) in 98% H 2 SO 4 produced bromoarenes in good yields. The acidity of the medium controls the strength of the brominating agent and the amount of polybrominated products. DFT calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0ad46276f8fa23f3217952af0c6ca14
https://doi.org/10.1016/j.tetlet.2009.02.010
https://doi.org/10.1016/j.tetlet.2009.02.010
Publikováno v:
Synlett. 2007:1687-1690
Efficient methodologies for the preparation of bromo-dichloroisocyanuric acid were developed (70-75%). This new -reagent is very efficient for regioselective electrophilic bromination of activated arenes (86-93%) and cobromination of alkenes with oxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37198db37af21b207977dba0a35a8054
https://doi.org/10.1055/s-2007-982575
https://doi.org/10.1055/s-2007-982575
Publikováno v:
ChemInform. 46
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a42507280d06f5f30b3fb1375df88b1b
https://doi.org/10.1002/chin.201502267
https://doi.org/10.1002/chin.201502267
Autor:
Haryadylla C. Sindra, Marcio C. S. de Mattos, Gabriela F. Mendonça, Leonardo S. de Almeida, Pierre M. Esteves
Publikováno v:
Tetrahedron Letters. 50:473-475
The reaction of β-dicarbonyl compounds (β-ketoesters and β-diketones) with 0.34 mol equiv of trichloro- and tribromoisocyanuric acids produced regioselectively the corresponding α-monohalo β-dicarbonyl compound. On the other hand, utilization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::722813aba4b5f1234801c393f6f3100d
https://doi.org/10.1016/j.tetlet.2008.11.045
https://doi.org/10.1016/j.tetlet.2008.11.045