Zobrazeno 1 - 10
of 13
pro vyhledávání: '"R. E. van der Stoel"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 97:116-120
Pyrimidine, 4-phenylpyrimidine, pyridazine, 3-phenylpyridazine and pyrazine were treated with phenyllithium in ether, yielding adducts resulting from attack of phenyllithium on the various positions of the heteroaromatic ring. With pyrimidine additio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e535d9ec9a9ed367ef2788a5e7ec71fc
https://doi.org/10.1002/recl.19780970409
https://doi.org/10.1002/recl.19780970409
Publikováno v:
Recueil des travaux chimiques des Pays-Bas = Journal of the Royal Netherlands Chemical Society, 102, 364-367
Recueil des travaux chimiques des Pays-Bas = Journal of the Royal Netherlands Chemical Society 102 (1983)
Recueil des travaux chimiques des Pays-Bas = Journal of the Royal Netherlands Chemical Society 102 (1983)
Photolysis of 4-R-1,4(or 3,4)-dihydropyrimidines causes ring contraction into imidazoles, provided that the substituent R is capable of sufficiently stabilizing an anionic centre (R = 2-thiazolyl, 2-pyridyl, 4-pyridyl). Chemical evidence is presented
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bddaff3d69e17e3b10cb7dd2786ba3fa
https://doi.org/10.1002/recl.19831020706
https://doi.org/10.1002/recl.19831020706
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 100:462-466
Bicyclo[2.2.0]hex-5-ene-2-endo-carboxylic acids and their methyl esters give the corresponding γ-lactones, together with isomerized products, upon treatment with hydrochloric acid in acetic acid. The reaction mechanism is discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbed4249f199e2c28dcecb0562de1a6d
https://doi.org/10.1002/recl.19811001207
https://doi.org/10.1002/recl.19811001207
Publikováno v:
Journal of Heterocyclic Chemistry. 17:1617-1620
1H- and 13C-nmr spectroscopy is presented showing that photolysis of 4-(p-trifluoromethylphenyl)-1,4-(3,4)-dihydropyrimidine yields 6-(p-trifluoromethylphenyl)-2,4-diazabicyclo[3.1.0]hex-2-(3)ene.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb837f0de45823788e43df3882ae1242
https://doi.org/10.1002/jhet.5570170756
https://doi.org/10.1002/jhet.5570170756
Publikováno v:
Tetrahedron. 34:569-575
Reaction between the tetramethyl[4]annulene aluminum trichloride σ-complex and α, β-alkenic esters gave the corresponding 1,4,5,6-tetramethylbicyclo[2.2.0]hex-5-one-2- endo -carboxylic esters. AlCl 3 -induced cationic rearrangements of these bicyc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3db4cf7636801a7fd6bcdca3ab5a17ac
https://doi.org/10.1016/0040-4020(78)80054-4
https://doi.org/10.1016/0040-4020(78)80054-4
Publikováno v:
Chemischer Informationsdienst. 11
Some organolithium-diazine adducts and some dihydropyrimidines were treated with electrophilic reagents. Both 4,6-diphenyl-1(3)-lithio-1,4(3,4)-dihydropyrimidine and 4,6-diphenyl-1,4(3,4)-dihydropyrimidine were attacked by the electrophilic reagent m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e6f56f3191cededc021a7972de1541e
https://doi.org/10.1002/chin.198047139
https://doi.org/10.1002/chin.198047139
Publikováno v:
Chemischer Informationsdienst. 13
Bicyclo[2.2.0]hex-5-ene-2-endo-carboxylic acids and their methyl esters give the corresponding γ-lactones, together with isomerized products, upon treatment with hydrochloric acid in acetic acid. The reaction mechanism is discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0408c64f513a5186eae3f54e3abd5bd6
https://doi.org/10.1002/chin.198212132
https://doi.org/10.1002/chin.198212132
Publikováno v:
Chemischer Informationsdienst. 9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::457ba08d6ad44e66e7f11ecd7a7e395f
https://doi.org/10.1002/chin.197829130
https://doi.org/10.1002/chin.197829130
Publikováno v:
Chemischer Informationsdienst. 14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15cbcd76dd63e80b53d23a8eb003430c
https://doi.org/10.1002/chin.198346171
https://doi.org/10.1002/chin.198346171
Publikováno v:
Chemischer Informationsdienst. 11
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d12cede733241c9d48578b6fa1ca657
https://doi.org/10.1002/chin.198005276
https://doi.org/10.1002/chin.198005276