Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Ian W. Harvey"'
Publikováno v:
Polymer. 34:4481-4487
The liquid-crystalline polyester (designated P R ), synthesized from hydroquinone diacetate, terephthalic acid and 6-acetoxy-2-naphthoic acid (1:1:2) by melt-phase transesterification, may be considerably modified in properties by the replacement of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e9b5371c3b12399ae0beead6c5de1f3
https://doi.org/10.1016/0032-3861(93)90154-3
https://doi.org/10.1016/0032-3861(93)90154-3
Autor:
David M. Smith, Ian W. Harvey, Iain G. Green, Linda J. Dunbar, Robert K. C. Wong, Tom Shepherd, Arshad Ahmad
Publikováno v:
ChemInform. 26
10-Chloroquinoxalino[2,3-c]cinnoline readily undergoes methoxydechlorination when treated with sodium methoxide. The 1-, 2-, 3-, 4- and 9-chloro isomers are unreactive towards this reagent, but the 9,10-dichloro derivative undergoes substitution of b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::557aff5b5036e113b51658214eb627d1
https://doi.org/10.1002/chin.199515194
https://doi.org/10.1002/chin.199515194
Publikováno v:
ChemInform. 27
Since it has been proposed that halogenation of quinoxalino[2,3-c]cinnolines at C-10, using hydrogen chloride or bromide in chloroform, occurs through initial protonation of the substrate at N-12, attempts have been made to inhibit this protonation b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10843beafae51c5f649a122d4419d9a9
https://doi.org/10.1002/chin.199643144
https://doi.org/10.1002/chin.199643144
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1699
Since it has been proposed that halogenation of quinoxalino[2,3-c]cinnolines at C-10, using hydrogen chloride or bromide in chloroform, occurs through initial protonation of the substrate at N-12, attempts have been made to inhibit this protonation b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e7107927b728fa9859bc19ebd4c6484
https://doi.org/10.1039/p19960001699
https://doi.org/10.1039/p19960001699
Autor:
Robert K. C. Wong, Linda J. Dunbar, Ian W. Harvey, David M. Smith, Tom Shepherd, Iain G. Green, Arshad Ahmad
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :2751
10-Chloroquinoxalino[2,3-c]cinnoline readily undergoes methoxydechlorination when treated with sodium methoxide. The 1-, 2-, 3-, 4- and 9-chloro isomers are unreactive towards this reagent, but the 9,10-dichloro derivative undergoes substitution of b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cb0f3638653ef21647d835b4fb43ede
https://doi.org/10.1039/p19940002751
https://doi.org/10.1039/p19940002751
Publikováno v:
ChemInform. 19
Of the two title compounds, the 4-amino isomer (1a) is easily obtained, either by reduction of the corresponding nitro compound, or in a five-step sequence from 2-nitro-1,3-phenylenediamine. The 7-amino isomer (1d) cannot be obtained by strictly anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::963cee297277148e9a2ac212c29989fa
https://doi.org/10.1002/chin.198843194
https://doi.org/10.1002/chin.198843194
Publikováno v:
ChemInform. 19
Since previous routes to the title compounds (1) have proved unsatisfactory as general methods, a simple new synthesis has been devised. N-Cyanomethyl-o-nitroanilines (5) are cyclised in basic media, giving 2-cyanobenzimidazole N-oxides (12) in good
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ca7d76e7288810006ce3a58defad288
https://doi.org/10.1002/chin.198825194
https://doi.org/10.1002/chin.198825194
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :681
Since previous routes to the title compounds (1) have proved unsatisfactory as general methods, a simple new synthesis has been devised. N-Cyanomethyl-o-nitroanilines (5) are cyclised in basic media, giving 2-cyanobenzimidazole N-oxides (12) in good
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2474cca1f392c6430939f54ea3d225bf
https://doi.org/10.1039/p19880000681
https://doi.org/10.1039/p19880000681
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1939
Of the two title compounds, the 4-amino isomer (1a) is easily obtained, either by reduction of the corresponding nitro compound, or in a five-step sequence from 2-nitro-1,3-phenylenediamine. The 7-amino isomer (1d) cannot be obtained by strictly anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38a96feed2439c239766799ff00b739e
https://doi.org/10.1039/p19880001939
https://doi.org/10.1039/p19880001939