Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Petr Hess"'
Autor:
Joseph M. Muchowski, Petr Hess, Liu Yanzhou, Markus E. Scheller, Michael L. Maddox, Sylvie L. Berthiaume, Brian L. Bray
Publikováno v:
Canadian Journal of Chemistry. 73:675-684
The first known lithiated 1-azafulvene derivatives, e.g., 8 and 13a, were generated by a low-temperature bromine–lithium exchange procedure with tert-butyllithium. These lithio species show substantial stability at ≤ −90 °C because, at these t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::622a4f361ed249051f47ba4fefc0c788
https://doi.org/10.1139/v95-086
https://doi.org/10.1139/v95-086
Autor:
J. M. Muchowski, Liu Yanzhou, Sylvie L. Berthiaume, Michael L. Maddox, Petr Hess, Brian L. Bray, Markus E. Scheller
Publikováno v:
ChemInform. 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d432729dc5b61d2a8aab449d7eafa7d
https://doi.org/10.1002/chin.199546132
https://doi.org/10.1002/chin.199546132
Publikováno v:
Helvetica Chimica Acta. 71:2053-2057
The first known lithiated 1-azafulvene derivatives were generated by low-temperature halogen/metal interchange, with t-BuLi, from the corresponding brominated 6-diisopropylamino compounds 3b and 12. These Li species reacted with sundry eletrophilic r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5eb729adba8040b497ea1d326f1675
https://doi.org/10.1002/hlca.19880710823
https://doi.org/10.1002/hlca.19880710823
Autor:
Joseph M. Muchowski, Petr Hess
Publikováno v:
Tetrahedron Letters. 29:777-780
Metalation of the dimer 1 of 6-dimethylamino-1-azafulvene, with t-butyllithium at −15°C, gave the 3,8-dilithio derivative 2 , which after reaction with diverse electrophilic reagents and hydrolysis, provided a wide variety of 5-substituted pyrrole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aeac0fc61cab549d3d553093ea583749
https://doi.org/10.1016/s0040-4039(00)80207-5
https://doi.org/10.1016/s0040-4039(00)80207-5
Autor:
Petr Hess, Joseph M. Muchowski
Publikováno v:
Tetrahedron Letters. 29:3215-3218
The dimer 1a of 3-bromo-6-dimethylam1no-1-azafulvene, is shown to function as a formal equivalent of 4-lithio- or 4.5-dilithiopyrrole-2-carboxaldehyde and consequently it is a progenitor, par excellence, of 4-mono- and 4,5-disubstituted pyrrole-2-car
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cd04260024a324452963a28a2804b94
https://doi.org/10.1016/0040-4039(88)85125-6
https://doi.org/10.1016/0040-4039(88)85125-6
Autor:
Joseph M. Muchowski, Petr Hess
Publikováno v:
ChemInform. 19
Metalation of the dimer 1 of 6-dimethylamino-1-azafulvene, with t-butyllithium at −15°C, gave the 3,8-dilithio derivative 2 , which after reaction with diverse electrophilic reagents and hydrolysis, provided a wide variety of 5-substituted pyrrole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b61fefabfa2c392441078867892a9e48
https://doi.org/10.1002/chin.198826096
https://doi.org/10.1002/chin.198826096
Publikováno v:
ChemInform. 20
The first known lithiated 1-azafulvene derivatives were generated by low-temperature halogen/metal interchange, with t-BuLi, from the corresponding brominated 6-diisopropylamino compounds 3b and 12. These Li species reacted with sundry eletrophilic r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8408a72066acc9e6a58ded8b73482000
https://doi.org/10.1002/chin.198911152
https://doi.org/10.1002/chin.198911152
Autor:
Joseph M. Muchowski, Petr Hess
Publikováno v:
ChemInform. 19
The dimer 1a of 3-bromo-6-dimethylam1no-1-azafulvene, is shown to function as a formal equivalent of 4-lithio- or 4.5-dilithiopyrrole-2-carboxaldehyde and consequently it is a progenitor, par excellence, of 4-mono- and 4,5-disubstituted pyrrole-2-car
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03c5a4cbfea92864197f43e1a63cd30c
https://doi.org/10.1002/chin.198850154
https://doi.org/10.1002/chin.198850154