Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Hand, Elli S."'
Synthesis and NMR-Spectroscopic Structure Determination of Novel 7,7?-Diphenyl-7,7?-diapocarotenoids
Publikováno v:
Helvetica Chimica Acta. 76:1939-1948
Wittig reaction of crocetindial (1) and benzylidenetripenylphosphorane (2) gave (7E, 7′Z)-7,7′-diphenyl-7-7′-diapocarotene (3), instead of the previously reported (7E, 7′E)-isomer. Similar reaction of 8,9-didehydrocrocetindial (4) with 2 yiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81641c07384dd09b07fcc978a9603e30
https://doi.org/10.1002/hlca.19930760512
https://doi.org/10.1002/hlca.19930760512
Publikováno v:
Helvetica Chimica Acta. 76:1928-1938
The synthesis of 7′-aryl-7′-apo-β-carotenes, where aryl (Ar) is Ph, 4-NO2C6H4, 4-MeOC6H4, 4-(MeO2C)C6H4, C6F5, and 2,4,6-Me3C6H2, is described. NMR Chemical shifts of all H- and C-atoms are presented, together with specific examples of the spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d1f86c532a1428b6edbd3fbc4b6675f
https://doi.org/10.1002/hlca.19930760511
https://doi.org/10.1002/hlca.19930760511
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30f2629e1147517c7cf2b1bf04153bcf
https://doi.org/10.1002/chin.199348232
https://doi.org/10.1002/chin.199348232
Publikováno v:
ChemInform. 24
NMR spectral analyses of 7′,7′-dicyano-7′-apo-β-carotene (1), which was synthesized to assess the effect of a terminal strong electron acceptor on the structure of carotenoids and the molecular features which control their photochemical proper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9190de7276551d55f237c421ba7b269
https://doi.org/10.1002/chin.199330252
https://doi.org/10.1002/chin.199330252
Publikováno v:
ChemInform. 24
Wittig reaction of crocetindial (1) and benzylidenetripenylphosphorane (2) gave (7E, 7′Z)-7,7′-diphenyl-7-7′-diapocarotene (3), instead of the previously reported (7E, 7′E)-isomer. Similar reaction of 8,9-didehydrocrocetindial (4) with 2 yiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05e0531a0aa222f8f054a94dd6edd710
https://doi.org/10.1002/chin.199348233
https://doi.org/10.1002/chin.199348233
Autor:
Hand Elli S, David C. Baker
Publikováno v:
ChemInform. 21
The highly volatile, weakly basic 2-chloro-5-fluoropyridine (3), prepared by diazotizatiopn of 5-amino-2-chloropyridine (1) with isoamyl nitrite/tetrafluoroboric acid followed by thermolysis (70%) has been characterized. Reaction of 3 with ammonia af
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26b1bc83f5d891184fa3eaf0f78c4310
https://doi.org/10.1002/chin.199019200
https://doi.org/10.1002/chin.199019200
Publikováno v:
Magnetic Resonance in Chemistry. 31:516-517
Chemical shifts of all protons at 8.46 T and 13 C atoms are presented for substituted 7'-aryl-7'-apo-β-carotenes, where aryl=C 6 H 5 , 4-C 6 H 4 NO 2 , 4-C 6 H 4 OCH 3 , 4-C 6 H 4 CO 2 CH 3 , C 6 F 5 and 2,4,6-C 6 H 2 (CH 3 ) 3 . Assignments were es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22c702da488b293d00e4b81334113f38
https://doi.org/10.1002/mrc.1260310519
https://doi.org/10.1002/mrc.1260310519
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :659
NMR spectral analyses of 7′,7′-dicyano-7′-apo-β-carotene (1), which was synthesized to assess the effect of a terminal strong electron acceptor on the structure of carotenoids and the molecular features which control their photochemical proper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f147e8a007392a0d95dd1e16c61673d
https://doi.org/10.1039/p29930000659
https://doi.org/10.1039/p29930000659
Publikováno v:
Journal of Organic Chemistry; 3/7/97, Vol. 62 Issue 5, p1348, 8p, 4 Diagrams, 2 Charts
Publikováno v:
Helvetica Chimica Acta; 1993, Vol. 76 Issue 5, p1928-1938, 11p