Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Zaghloul E. Kandeel"'
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 177:105-114
The enaminones 1a , b reacted with phenylisothiocyanate to afford the thioanilides 2a , b . The latter could be utilized to synthesize several new polysubstituted thiophenes 9a-f , and 1,3,4-thiadiazoles 12a-f .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b011d29c6deaf6b4dc992ff38e5fbd5
https://doi.org/10.1080/10426500210232
https://doi.org/10.1080/10426500210232
Publikováno v:
Heteroatom Chemistry. 10:417-422
2-Acetylbenzothiazole (1) reacts with dimethylformamide dimethylacetal (DMF-DMA) to afford the enaminone 2. Compound 2 reacts regioselectively with some nitrilimines 5a–d and nitrile oxides 6b–d to afford the novel pyrazole and isoxazole derivati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27d35812d24f8e078d7af38fc373b460
https://doi.org/10.1002/(sici)1098-1071(1999)10:5<417::aid-hc12>3.0.co
https://doi.org/10.1002/(sici)1098-1071(1999)10:5<417::aid-hc12>3.0.co
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 130:43-51
The novel 1-aryl-5-(benzothiazol-2-yl)carbonyl-2-imino-1,3,4-thiadiazoles 7a-c and their selenium analogues 8a-c were prepared in high yields by coupling of 2-thiocyanatoacetylbenzothiazole 3 or its selenium analogue 4 with aromatic diazonium salts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b18a8c393935fb4521248a4a0ac42094
https://doi.org/10.1080/10426509708033695
https://doi.org/10.1080/10426509708033695
Publikováno v:
Tetrahedron. 53:161-166
3-(Benzothiazol-2-yl)-3-oxopropanenitrile ( 1 ) reacts with phenylisothiocyanate in the presence of potassium hydroxide followed by addition of the hydrazonoyl bromides 2a-c to afford the novel 1,3,4- thiadiazole derivatives 6a-c via the intermediate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40b6a794f7edc81b00e156db2a232be5
https://doi.org/10.1016/s0040-4020(96)00959-3
https://doi.org/10.1016/s0040-4020(96)00959-3
Publikováno v:
Tetrahedron. 52:7893-7900
The versatile, hitherto unreported 3-(benzothiazol-2-yl)-3-oxopropanenitrile (3) was prepared by two convenient routes: either by the reaction of ethyl 2-benzothiazolecarboxylate (1) with acetonitrile in the presence of sodium hydride or by treatment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8de6d94477ebbbe462dcf41084d3fc8
https://doi.org/10.1016/0040-4020(96)00360-2
https://doi.org/10.1016/0040-4020(96)00360-2
Autor:
Zaghloul E. Kandeel
Publikováno v:
Heteroatom Chemistry. 7:29-33
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a70d7b365d314faf66fd439185df32d7
https://doi.org/10.1002/(sici)1098-1071(199601)7:1<29::aid-hc5>3.0.co
https://doi.org/10.1002/(sici)1098-1071(199601)7:1<29::aid-hc5>3.0.co
Publikováno v:
Heteroatom Chemistry. 7:35-38
A facile, one-step synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-benzopyran derivatives 4a-e via cyclo-addition reactions of acrylonitrile derivatives 1a-e with 1,3-cyclohexandione 2 is described. On the other hand, the reactions of 2 with the thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f98f761f9ec2602cac7b98332a97bf73
https://doi.org/10.1002/(sici)1098-1071(199601)7:1<35::aid-hc6>3.0.co
https://doi.org/10.1002/(sici)1098-1071(199601)7:1<35::aid-hc6>3.0.co
Autor:
Eiman I. Abou El Maged, Salem El Gohary, Zaghloul E. Kandeel, Suzan Ibrahim Aziz, Mona M. Husein
Publikováno v:
Heteroatom Chemistry. 6:319-323
A new route for the synthesis of 3H-1,2,4-triazolo[1,5-a]pyridines 7a–j, 12a,b, and 17a,b utilizing the reaction of the hydrazones of cyanoethanoic acid hydrazide 3a,b with ylidene malononitriles 2a–e, malononitrile, and 3-aminocrotononitrile is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86b2beb9a512842b5fd84e2566063e7f
https://doi.org/10.1002/hc.520060408
https://doi.org/10.1002/hc.520060408
Autor:
Maghraby A. Sleim, Fawi M. Abdelatif, Ebtisam Abdel Aziz Hafez, Zaghloul E. Kandeel, Mohamed Hilmy Elnagdi
Publikováno v:
Heteroatom Chemistry. 6:305-309
4-Arylmethylene-2-phenyl-2-oxazolin-5-ones 1a,b reacted with some active methylene reagents to afford pyrrolidine-3,5-dione, pyrrolo[2,3-b]pyridine and pyrrolinone derivatives. The cinnamate ester, obtained from 1a and sodium ethoxide, could be conve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::498b228daaba9ed8d4e49c2aae3b607a
https://doi.org/10.1002/hc.520060405
https://doi.org/10.1002/hc.520060405
Publikováno v:
Heteroatom Chemistry. 6:281-285
3-Dicyanomethylene-3-phenylpropionitrile coupled with diazotized aromatic amines (Ar-NH2) to afford hydrazono derivatives. The latter (Ar = C6H5, 4-CH3C6H4, 4-CH3OC6H4, and 4-ClC6H4) were readily cyclized upon reflux in aqueous NaOH to 3(2H) pyridazi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da299e36097e50ba828c22d7a855b9d9
https://doi.org/10.1002/hc.520060314
https://doi.org/10.1002/hc.520060314