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Öğe Catalytic asymmetric 1,3-dipolar cycloadditions of azomethine yllides using chiral ferrocenyl substituted aziridinylmethanol (Fam)-zinc complexes(Amer Chemical Soc, 2005) Doğan, Özdemir; Garner, P.; Koyuncu, H.; Bulut, A.…Öğe Catalytic enantioselective addition of diethylzinc to aldehydes using aziridine based chiral ligands(Pergamon-Elsevier Science Ltd, 2007) Bulut, Adnan; Aslan, Ayhan; İzgü, Enver Cağrı; Doğan, ÖzdemirThe readily available ferrocenyl substituted aziridinylmethanol 1 (FAM-1) was used as a chiral catalyst in the diethylzinc addition reaction to aromatic and aliphatic aldehydes to give secondary alcohols in high yields and up to 99% enantiomeric excess at room temperature. The catalyst can be recovered and used without losing its activity. (c) 2007 Elsevier Ltd. All rights reserved.Öğe Efficient synthesis of ferrocenylenones by Friedel-Crafts acylation with EtAlCl2-Me3Al(Elsevier Science Sa, 2005) Doğan, Özdemir; Şenol, Volkan; Zeytinci, Serhat; Koyuncu, Hasan; Bulut, AdnanEfficient synthesis of ferrocenyl en ones using a Friedel-Crafts acylation reaction is described. Acryloyl, methacryloyl, crotonoyl, cinnamoyl, and beta-methylcrotonoyl chlorides react with ferrocene in the presence of a Lewis acid (EtAlC2 or EtAlCl2-Me3Al) to give the corresponding ferrocenyl en ones (acryloyl, methacryloyl, crotonoyl, cinnamoyl, and methylcrotonoylferrocenes) in good isolated yields. Besides ferrocenylenones, chloroactylferrocene is also synthesised by this method. (C) 2004 Elsevier B.V. All rights reserved.Öğe New zinc(II)-based catalyst for asymmetric azomethine ylide cycloaddition reactions(Amer Chemical Soc, 2006) Doğan, Özdemir; Koyuncu, Hasan; Garner, Philip; Bulut, Adnan; Youngs, Wiley J.; Panzner, MatthewA new chiral aziridino alcohol ligand for zinc(II)-catalyzed azomethine ylide cycloadditions is described. In the presence of this catalyst, N-arylidene glycine methyl esters react with a variety of dipolarophiles to give substituted pyrrolidines in very good to excellent chemical yields and up to 95% ee. The absolute sense of asymmetric induction appears to be dipolarophile-dependent.Öğe ORGN 188-A new method for the synthesis of racemic and chiral aziridine 2-phosphonates(Amer Chemical Soc, 2009) Doğan, Özdemir; Bulut, Adnan; Aslan, Ayhan; Tan, Serkan; Babiz, Hakan…Öğe ORGN 90-A new phosphorous based chiral catalyst for the catalytic asymmetric synthesis of pyrrolidines via 1,3-dipolar cycloadditions of azomethine ylides(Amer Chemical Soc, 2009) Doğan, Özdemir; Eroksuz, Serap; Garner, Philip P.; Bulut, Adnan…Öğe Synthesis of new ferrocenyl-substituted aziridines via the Gabriel-Cromwell reaction(Taylor & Francis Inc, 2005) Doğan, Özdemir; Zeytinci, Serhat; Bulut, AdnanThe Gabriel -Cromwell method is applied successfully in the synthesis of ferrocenyl-substituted aziridines. Acryloyl- and crotonoy1ferrocenes are brominated first and then reacted with benzylamine, diisopropylamine, and furfurylamine in the presence of triethylamine. The aziridines are obtained in more than 90% isolated yields.
