Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Giuseppe Werber"'
Autor:
Giuseppe Cusmano, Giuseppe Werber, Renato Noto, Francesco Buccheri, Michelangelo Gruttadauria
Publikováno v:
Scopus-Elsevier
The reactions beetwen 2,4-disubstituted thiosemicarbazides and orthoesters in refluxing xylene led to the formation of the 1,2,4-triazoline-5-thione ring and to the 1,2,4-triazolium-5-thiolate ring. The formation of the mesoionic componds is due to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::196e3bb0e45b0268050739e2d9dc6c53
https://doi.org/10.1002/jhet.5570340512
https://doi.org/10.1002/jhet.5570340512
Publikováno v:
Journal of Heterocyclic Chemistry. 32:1277-1282
Treatment of benzaldehyde semicarbazones 1a-i with cupric perchlorate in acetonitrile at 40 provided selectively the corresponding 1,2,4-triazolin-5-ones 2a-i. The relative rate constants for 2a-i formation were determined by the competitive method.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa170b3535bb6fff43ae73c230eebba9
https://doi.org/10.1002/jhet.5570320430
https://doi.org/10.1002/jhet.5570320430
Autor:
Paolo Lo Meo, Francesco Buccheri, Giuseppe Werber, Michelangelo Gruttadauria, Renato Noto, Giuseppe Cusmano
Publikováno v:
Journal of Heterocyclic Chemistry. 30:765-770
The oxidative cyclization of some aldehyde semicarbazones 10 with four different oxidizing agents has been effected. The structure of the semicarbazones and the nature of cyclizing agent affected the rate and yield of cyclization but they did not sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0efcc0a055564cbba0f40608e1484eca
https://doi.org/10.1002/jhet.5570300327
https://doi.org/10.1002/jhet.5570300327
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f005a5f40995714c3ea21c6b083315c
https://doi.org/10.1002/chin.199124103
https://doi.org/10.1002/chin.199124103
Autor:
Francesco Buccheri, Michelangelo Gruttadauria, Giuseppe Cusmano, Giuseppe Werber, Renato Noto
Publikováno v:
ChemInform. 23
The reactivity of aldehyde thiosemicarbazones 1 with ferric chloride solutions was examined. When compounds 1 are not substituted on the N-2 nitrogen atom formation of 1,3,4-thiadiazole 3 heterocyclic ring was observed. In contrast 1,2,4-triazoline 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0bef675a1284618817dbd2c8f5452f6
https://doi.org/10.1002/chin.199204075
https://doi.org/10.1002/chin.199204075
Autor:
Michelangelo Gruttadauria, Francesco Buccheri, Giuseppe Cusmano, Silvestre Buscemi, Giuseppe Werber, Renato Noto
Publikováno v:
ChemInform. 23
The photochemical behaviour of some substituted aldehyde thiosemicarbazones 1a-k has been investigated in methanol at 254 nm. Thiosemicarbazones of glyoxil methyl ester 1a-f cyclized to furnish the 3-thioxo- 1,2,4-triazin-5-one 2 ring system. The rem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f5b844fee225c5c03ca3515e9952c82
https://doi.org/10.1002/chin.199232176
https://doi.org/10.1002/chin.199232176
ChemInform Abstract: Oxidative Cyclization of Some Aldehyde Semicarbazones Induced by Metallic Salts
Autor:
Renato Noto, Paolo Lo Meo, Giuseppe Werber, Francesco Buccheri, Michelangelo Gruttadauria, Giuseppe Cusmano
Publikováno v:
ChemInform. 24
The oxidative cyclization of some aldehyde semicarbazones 10 with four different oxidizing agents has been effected. The structure of the semicarbazones and the nature of cyclizing agent affected the rate and yield of cyclization but they did not sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a154e08f535841aa03205416acd02fd
https://doi.org/10.1002/chin.199349180
https://doi.org/10.1002/chin.199349180
Publikováno v:
ChemInform. 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5615b2f2a8a0ea6fc76db575a0b54e6d
https://doi.org/10.1002/chin.199551053
https://doi.org/10.1002/chin.199551053
Autor:
Francesco Buccheri, Michelangelo Gruttadauria, Giuseppe Werber, Renato Noto, Giuseppe Cusmano
Publikováno v:
ChemInform. 29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce3d9237479f671c0c0e626bf8b8676f
https://doi.org/10.1002/chin.199816123
https://doi.org/10.1002/chin.199816123
Publikováno v:
ChemInform. 30
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d91dcb49c22ef6539a2f16d2ec34f10
https://doi.org/10.1002/chin.199944031
https://doi.org/10.1002/chin.199944031