Asymmetric Hydrogenation and Catalysis

Pentaphenylcyclopentadienyl ruthenium complexes (3) are excellent catalysts for the racemization of secondary alcohols at ambient temperature. The combination of this process with enzymatic resolution of the alcohols results in a highly efficient synthesis of enantiomerically pure acetates at room temperature with sho…

• FİLİZ BETÜL KAYNAK

Sodium borohydride, NaBH4, has been considered the most attractive hydrogen-storage material for portable fuel cell applications, as it provides a safe and practical means of producing hydrogen. In a recent communication (Zahmakiran, M.; Ozkar, S. Langmuir 2008, 24, 7065), we have reported a record total turnover numb…

• MEHMET ZAHMAKIRAN

We describe a catalytic system composed of rhodium nanoparticles immobilized in a Lewis acidic ionic liquid. The combined system catalyzes the hydrogenation of quinolines, pyridines, benzofurans, and furan to access the corresponding heterocycles, important molecules present in fine chemicals, agrochemicals, and pharm…

• İSMAİL AKÇOK

Ferrocenyl-substituted aziridinylmethanol (Fam-1) was used as a catalyst with zinc for the asymmetric nitroaldol (Henry) reaction. This catalyst worked with a variety of aldehydes (aromatic, aliphatic, alpha,beta-unsaturated, and heteroaromatic) and alpha-ketoesters to give the nitroaldol product in up to 97% yield an…

Ferrocenyl-substituted aziridinylmethanol (Fam-1) was used as a catalyst with zinc for the asymmetric nitroaldol (Henry) reaction. This catalyst worked with a variety of aldehydes (aromatic, aliphatic, alpha,beta-unsaturated, and heteroaromatic) and alpha-ketoesters to give the nitroaldol product in up to 97% yield an…

• ÖZDEMİR DOĞAN

Herein we report the discovery of a superior dimethylamine-borane dehydrogenation catalyst, more active than the prior best heterogeneous catalyst (Jaska, C. A.; Manners, I. J. Am. Chem. Soc. 2004, 126, 9776) reported to date for the dehydrogenation of dimethylamine-borane. The new catalyst system consists of rhodium(…

• MEHMET ZAHMAKIRAN

A range of ruthenium cyclopentadienyl (Cp) complexes have been prepared and used for isomerization of allylic alcohols to the corresponding saturated carbonyl compounds. Complexes bearing CO ligands show higher activity than those with PPh3 ligands. The isomerization rate is highly affected by the substituents on the…

• FİLİZ BETÜL KAYNAK

A new type of carbene precursor, 1,5,6,7,8,8a-hexahydroimidazo[1,5- a ]pyridine ( 1 ), has been prepared from 2-(aminomethyl)piperidine and N,N -dimethylformamide dimethylacetal. The reactions of three imidazolidinium salts with [Rh(acac)(COD)] and [Ir(μ-OMe)(COD)] 2 were found to afford rhodium and iridium complexes…

• HAYATİ TÜRKMEN

The method for the synthesis of 1,4-dihydropyridine compounds in the presence of Pd–Ni–Ru@GO was developed, which is simple, effective and productive.

The method for the synthesis of 1,4-dihydropyridine compounds in the presence of Pd–Ni–Ru@GO was developed, which is simple, effective and productive.

• FATİH ŞEN

The method for the synthesis of 1,4-dihydropyridine compounds in the presence of Pd–Ni–Ru@GO was developed, which is simple, effective and productive.

• FATİH ŞEN
• MUSTAFA ARSLAN

A highly effective and green procedure for the formation of α-alkylated ketones has been disclosed via the reaction of primary alcohols with secondary alcohols and ketones by using [IrCl(COD)(NHC)] complexes as a catalyst. Various α-alkylated ketones were obtained in high yields from the alkylation of alcohol with alc…

• SALİH GÜNNAZ
• SÜLEYMAN GÜLCEMAL