amr_hassanegypt

Amr Hassan Moustafa Ahmed

Assistant Professor - Assistant Professor

Faculty of science

Address: Al-Iman Tower, Al-Sharaieh Street, behind the university's dormitory for girls' students, Nasser City - Sohag

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Publications Which contain the keyword: Cyanoguanidine

2. A regioselective and convenient one-pot multicomponent synthesis of polyfunctionalized 4-aryl-2-cyanoimino-3,4-dihydro-1H-pyrido[2,3-d]pyrimidines

2019-12-10 00:15:17 Keywords Cyanoguanidine, Cyanoiminopyrimidine, stereoselective, pyrido[2, 3-d]pyrimidine, spiro pyrimidine, multicomponent reactions, MCRs,
2. A regioselective and convenient one-pot multicomponent synthesis of polyfunctionalized 4-aryl-2-cyanoimino-3,4-dihydro-1H-pyrido[2,3-d]pyrimidines
A novel series of 5,7-diamino-4-aryl-6-cyano-2-cyanoimino-3,4-dihydro-1H-pyrido[2,3-d]pyrimidines (aryl-CIDHPPMs) 3a–i was prepared via the one-pot four-component reaction of cyanoguanidine with aromatic aldehydes and malononitrile with molar ratio (1:1:2) using sodium methoxide as catalyst. These new polyfunctionlized aryl-CIDHPPMs were also synthesized by a classical route via reaction of cyanoguanidine with the respective arylidenes of malononitrile dimer under the same condition. In the same manner, ... Read more

New route for the synthesis of new cyanoimino- and cyanoaminopyrimidines

2018-09-24 11:51:31 Keywords Cyanoguanidine,
New route for the synthesis of new cyanoimino- and cyanoaminopyrimidines
A novel series of 4-aryl-2-cyanoimino-3,4-dihydro-1_H_-pyrimidines (aryl-CIDHPMs) was synthesized using a new method via the one-pot three-component reaction of cyanoguanidine with malononitrile and aromatic aldehydes using sodium methoxide as catalyst. These new aryl-CIDHPMs were also prepared by a classical route via reaction of cyanoguanidine with the corresponding arylidenemalononitriles under our conditions. In the same manner, the reaction of cyanoguanidine with cyclohexylidenemalononitrile ... Read more

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