Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Carlos A. Pittol"'
Autor:
Carlos A. Pittol, Vladimir Šik, Julian O. Williams, Kieran C. Molloy, G. Ryback, Mary F. Mahon, Robert J. Pryce, John A. Winders, Stanley M. Roberts
Publikováno v:
ChemInform. 22
Various cycloadditions involving the cyclohexadiene derivatives 7–10 have been investigated. Diets–Alder reactions involving dimethyl acetylenedicarboxylate, nitrosobenzene and N-ethylmaleimide gave the adducts 11–14, 16–17 and 18–23 respec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53e7df6cf872c8e004d92af73d94baca
https://doi.org/10.1002/chin.199133081
https://doi.org/10.1002/chin.199133081
Publikováno v:
ChemInform. 25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a305bbf9ef9e3466165d9e0eaea78aa2
https://doi.org/10.1002/chin.199435060
https://doi.org/10.1002/chin.199435060
Autor:
Stanley M. Roberts, Carlos A. Pittol, Wendy Downing, Regine Latouche, Julian O. Williams, G. Ryback, Robert J. Pryce
Publikováno v:
ChemInform. 21
The reactions of cis-1,2-isopropylidenedioxycyclohexa-3,5-diene (1) with two N-substituted maleimides, diphenylketene, dichlorocarbene and ethoxycarbonylcarbene are described. Selected reactions of the 3-triflucromsthyl-(2) and 3-fluoro-(3) analogues
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fc7826c92569b1395b16b019bdab54b
https://doi.org/10.1002/chin.199052079
https://doi.org/10.1002/chin.199052079
Publikováno v:
Journal of the Chemical Society, Chemical Communications. :803
The dienes 11–15 react with diphenylketene to give mixtures of the corresponding [2 + 2]-adducts 16–20 and [4 + 2]-adducts 21–25: the isomers 19/24 were converted into the optically active lactone 26 in two steps.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66cecaaaec122ce8f013919cb3677743
https://doi.org/10.1039/c39940000803
https://doi.org/10.1039/c39940000803
Autor:
Stanley M. Roberts, Russell J. Thomas, Robert J. Pryce, Julian O. Williams, Carlos A. Pittol, Rakesh Maurya
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1617
Diphenylketene reacted with the 2-azabicyclo[2.2.1]hept-5-enes 5, 6 and 10 by attack on nitrogen to give the piperidones 7, 8 and the cyclopentenols 11 respectively. The same ketene reacted with the cyclohexa-1,3-dienes 16 and 17 to give significant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8207a3c925b16c7589bfb41ecda92a51
https://doi.org/10.1039/p19920001617
https://doi.org/10.1039/p19920001617
Autor:
Carlos A. Pittol, Kieran C. Molloy, Stanley M. Roberts, Vladimir Šik, Julian O. Williams, John A. Winders, Robert J. Pryce, G. Ryback, Mary F. Mahon
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1255
Various cycloadditions involving the cyclohexadiene derivatives 7–10 have been investigated. Diets–Alder reactions involving dimethyl acetylenedicarboxylate, nitrosobenzene and N-ethylmaleimide gave the adducts 11–14, 16–17 and 18–23 respec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d866d973788d281723a943f6e33a460f
https://doi.org/10.1039/p19910001255
https://doi.org/10.1039/p19910001255
Autor:
G. Ryback, Regine Latouche, Robert J. Pryce, Carlos A. Pittol, Wendy Downing, Stanley M. Roberts, Julian O. Williams
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :2613
The reactions of cis-1,2-isopropylidenedioxycyclohexa-3,5-diene (1) with two N-substituted maleimides, diphenylketene, dichlorocarbene and ethoxycarbonylcarbene are described. Selected reactions of the 3-triflucromsthyl-(2) and 3-fluoro-(3) analogues
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11416139be6d44ed02ac0b0ccc64b4fb
https://doi.org/10.1039/p19900002613
https://doi.org/10.1039/p19900002613
Autor:
Robert J. Pryce, George Ryback, Carlos A. Pittol, Stanley M. Roberts, Vladimir Šik, Julian O. Williams
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1160
The title compound was treated with several dienophiles to give cycloadducts resulting from addition to the less hindered face of the molecule. An exceptional case was provided by N-ethylmaleimide which added in endo-fashion to both faces of the dien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11caf8a84b74164919696c8a5cc2fbef
https://doi.org/10.1039/p19890001160
https://doi.org/10.1039/p19890001160