Ring Opening and Recyclization Reactions of 3‐Nitrochromone with Some Nucleophilic Reagents

Autor: Youssef A. Alnamer, Magdy A. Ibrahim

Publikováno v: Journal of Heterocyclic Chemistry. 56:2341-2346

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a361a487b3c0dac60e0cf566865eda9
https://doi.org/10.1002/jhet.3620

Domino reactions between 6-ethyl-5,6-dihydro-4,5-dioxo-4 H -pyrano[3,2- c ]quinoline-3-carbonitrile and carbon nucleophilic reagents: Synthesis of novel heteroannulated pyridopyranoquinolines

Autor: Magdy A. Ibrahim, Al-Shimaa Badran, Youssef A. Alnamer

Publikováno v: Tetrahedron. 74:4119-4125

A variety of novel heteroannulated pyrano[3,2-c]quinolines 2–12 was efficiently synthesized via a domino ‘Michael/retro-Michael/nitrile addition/heterocyclization’ reactions between 6-ethyl-5,6-dihydro-4,5-dioxo-4H-pyrano[3,2-c]quinoline-3-carb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7804adbdd752874fb1f030f2e843bb80
https://doi.org/10.1016/j.tet.2018.06.027

Studies on the chemical behavior of 3-(nitroacetyl)-1-ethyl-4-hydroxyquinolin-2(1H)-one towards some electrophilic and nucleophilic reagents

Autor: Youssef A. Alnamer, Magdy A. Ibrahim, Hany M. Hassanin, Yassin Gabr

Publikováno v: Journal of the Brazilian Chemical Society v.23 n.5 2012
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 23, Issue: 5, Pages: 905-912, Published: MAY 2012

A variety of heterocyclic systems linked to 1-ethylquinolin-2(1H)-one was prepared from reaction of 3-(nitroacetyl)-1-ethyl-4-hydroxyquinolin-2(1H)-one with some electrophilic and nucleophilic reagents. Besides its cyclization to 5-ethyl-2-(hydroxyim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::130679a410f2c4c5d6a3169113a23c4b
https://doi.org/10.1590/s0103-50532012000500016

Synthesis, Characterization, and Antimicrobial Evaluation of Some Novel 4-Hydroxyquinolin-2(1H)-ones

Autor: Magdy A. Ibrahim, Youssef A. Alnamer, Hany M. Hassanin

Vilsmeier-Haack formylation of 3-acetyl-1-methyl-4-hydroxyquinolin-2(1H)-one (2) produced the novel 6-methyl-4,5-dioxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxaldehyde (3). Reactions of carboxaldehyde 3 with a diversity of nucleophilic reagents

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a050f49570dda395c7cd5a90824ccd0c

Synthesis and chemical reactivity of 2-methylchromones.

Autor: Ibrahim, Magdy A.¹ magdy•ahmed1977@yahoo.com, Ali, Tarik E.¹, Alnamer, Youssef A.¹, Gabr, Yassin A.¹

Publikováno v: ARKIVOC: Online Journal of Organic Chemistry. 2010, p98-135. 38p. 59 Diagrams, 1 Chart.