Zobrazeno 1 - 10
of 13
pro vyhledávání: '"M S A El-Gaby"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-19 (2023)
Abstract Carbon steel is widely used in the petroleum industry for pipelines, storage tanks, and equipment due to its mechanical properties, and strength. However, challenges such as environmental conditions and corrosive materials can affect its lif
Externí odkaz:
https://doaj.org/article/cd274377a20d4c3da92ae1bf541081ec
Publikováno v:
Journal of Chemical Sciences. 134
Publikováno v:
Oriental Journal of Chemistry. 31:875-884
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 183:3023-3036
Cyclocondensation of 2-cyanomethyl-4-thiazolidinone (1) with tetracyanoethylene (2) furnished pyrano[2,3-d]thiazole derivative (4) . Benzo[e]pyrano[2,3-d]thiazole derivative (6) was obtained by cyclization of compound (1) with salicylaldehyde. In a s
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 183:2918-2928
The key intermediate diisothiocyanate 2 was allowed to react with 5-amino-3-methyl-pyrazole-4-carbonitrile 3, ethyl 5-amino-1-phenyl-pyrazole-4-carboxylate 6, 2-amino-tetrahydrobenzo[b]thiophene-3-car-bonitrile 9, ethyl-2-amino-tetra-hydrobenzo[b]thi
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 183:2929-2942
Interaction of dapson [bis(4-aminophenyl)sulfone] 1 with [bis-(methylsulfonyl) methylidine]malononitrile 2 yielded the corresponding dicyano derivative 3, which was reacted with acetic anhydride, succinic anhydride, 4-chlorobenzaldehyde, phenyl isoth
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 181:279-297
Thieno [2,3-b] quinoline derivative 5 was synthesized by the cycloalkylation of compound bi 3a with chloro acetonitrile. Interaction of compound 5 with formic acid, formamide, and thioacetamide furnished the corresponding quinolino[3′,2′:4,5]thie
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 173:39-58
Reactions of 5-imino-4-thioxoimidazolidine (II) and 4-thioxoimidazolidine-2,5-diones (III) with amines, hydrazine hydrate, hydrazine derivatives, o-phenylenediamines and cupper turnings were investigated.
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 148:215-226
The imidazolidines (II) were reacted with amines, H2S and o-phenyhediamines to give 4-substituted imino derivatives (VI), thiohydantoin (VII) and 1-phenyl-3 -substituted-1H-imidazo[4,5-b]-quinoxaline-2-(3H)-ones(XIII), respectively. Interaction of th
Publikováno v:
Chemical Sciences Journal. 2
The reactivity of 2,3-pyridine dicarboxylic anhydride towards some nitrogen nucleophiles under different conditions was studied. Thus, the reaction of anhydride with substituted anilines (X = 3-COOH, 4-COOH, 4-COOC2H5, 2-OC2H5, 4-OC2H5) in acetic aci