Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Vania B. Dabdoub"'
Autor:
Paulo R. de Oliveira, Marco Aurélio Pereira, Miguel J. Dabdoub, Adriano C. M. Baroni, Palimécio G. Guerrero, Vania B. Dabdoub, Francisco A. Marques
Publikováno v:
Tetrahedron Letters. 51:5141-5145
One-pot hydrochalcogenation of 1-phenylthioacetylenes using organylselenolate and organyltellurolate anions generated by the insertions of selenium and tellurium in n -organyl lithium produced ( Z )-1,2-bis(organylchalcogene)-1-alkenes. The chemical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6718bcc91c8cbb827a14babbba6de9b
https://doi.org/10.1016/j.tetlet.2010.07.112
https://doi.org/10.1016/j.tetlet.2010.07.112
Autor:
Adriano C. M. Baroni, Amanda S. Santana, Gabriela R. Hurtado, Luiz Henrique Viana, Carlos Eduardo Domingues Nazario, Eder J. Lenardão, Vania B. Dabdoub, Sandro L. Barbosa, Palimécio G. Guerrero, Miguel J. Dabdoub
Publikováno v:
Synlett. 2009:986-990
Hydrothiolation of 1-organylbuta-1,3-diynes and 1,4-di-organylbuta-1,3-diynes with the sodium organylthiolate anions,which were generated in situ by reacting diphenyl and dibutyl di-sulfide with NaBH 4 in ethanol, results in the regio-, stereo-, andc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5a70d475768caddd02fbeb8c3ab9725
https://doi.org/10.1055/s-0028-1088196
https://doi.org/10.1055/s-0028-1088196
Publikováno v:
Tetrahedron Letters. 41:437-440
The efficient cross-coupling reactions of different alkynyl organozinc reagents with unsaturated organotellurium species catalyzed by Pd(PPh3)4/CuI and using THF/DMF systems are described. These cross-coupling reactions are general and permit the for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1600aa071942d01b2338a39afc950ba7
https://doi.org/10.1016/s0040-4039(99)02088-2
https://doi.org/10.1016/s0040-4039(99)02088-2
Publikováno v:
Tetrahedron Letters. 41:433-436
The cross-coupling reaction of diethyl- or dimethylzinc compounds with disubstituted vinylic tellurides as electrophilic partners is described. These cross-coupling reactions were catalyzed by Pd(PPh 3 ) 4 /CuI and were shown to be general, allowing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9d67fb56fe950cef33fb304b3c193f5
https://doi.org/10.1016/s0040-4039(99)02087-0
https://doi.org/10.1016/s0040-4039(99)02087-0
Autor:
Vania B. Dabdoub, Francisco A. Marques, Miguel J. Dabdoub, J. T. B. Ferreira, Raquel G. Jacob
Publikováno v:
Tetrahedron Letters. 40:7159-7162
The treatment of isomeric vinylic tellurides 5–7 with butyllithium in THF at −78 °C in the presence of a carbonyl compound such as benzaldehyde or cyclohexanone was studied. High selectivity of the attack at the tellurium atom was observed. In m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a77a4ea45f7d56c9ed19e5027bddb4fc
https://doi.org/10.1016/s0040-4039(99)01567-1
https://doi.org/10.1016/s0040-4039(99)01567-1
Publikováno v:
Tetrahedron. 53:4199-4218
(1Z,3Z)-1-Butyltelluro-1,3-butadienes 8,9 and 12 obtained by the hydrotelluration of but-1-en-3-ynes 1,2 and 5 were transformed into the corresponding buta-1,3-dienyl-1-lithium by reaction with n-BuLi. 1,3-Butadienes 14, 15, 17–20 were obtained wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72839729b633db63adebb89f2d1ab75e
https://doi.org/10.1016/s0040-4020(97)00148-8
https://doi.org/10.1016/s0040-4020(97)00148-8
Autor:
Vania B. Dabdoub, Miguel J. Dabdoub
Publikováno v:
Tetrahedron. 51:9839-9850
Unsymmetrical 1.4-diorganyl-1,3-butadiyncs la-g undergo rcgio-, stereo- and chemoselective addition of butyltcllurolatc anion leading to (Z)-1-butyltelluro-1,4-bis(organyl)but-1-en-3-ynes 2a-g in good yields. The terminal triple bond reacts faster th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46335d3a568150bbddb5a0a15fec165a
https://doi.org/10.1016/0040-4020(95)00564-o
https://doi.org/10.1016/0040-4020(95)00564-o
Publikováno v:
ChemInform. 43
The natural product navenone B is synthesized in seven steps starting from commercially available methoxy-1-buten-3-yne.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcd48884e53209852aec265318148d1b
https://doi.org/10.1002/chin.201236194
https://doi.org/10.1002/chin.201236194
Publikováno v:
Tetrahedron Letters. 42:1807-1809
Treatment of 2-methyl-2-hydroxy-6-alkyl-3,5-diacetylenes with powdered NaOH was used for the synthesis of terminal 1-alkyl-1,3-butadiynes that can be isolated (54–97%) or used in situ. In an attempt to increase the yields of some of the obtained pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dce1d721c527aebbbba2f48e01348fb0
https://doi.org/10.1016/s0040-4039(01)00046-6
https://doi.org/10.1016/s0040-4039(01)00046-6
Publikováno v:
Tetrahedron Letters. 42:1595-1597
The treatment of 1-phenylthioacetylenes with phenylselenolate and butyl or phenyltellurolate anions generated by the reaction of the corresponding dichalcogenide with NaBH4 in aqueous ethanol results in the formation of mixed 1,2-bis(organylchalcogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2db8c80e834a2c1cec8be2ca2e928c52
https://doi.org/10.1016/s0040-4039(00)02291-7
https://doi.org/10.1016/s0040-4039(00)02291-7