Search Results - "Martins, José E.D."

Ir(III) complexes of diamine ligands for asymmetric ketone hydrogenation by Martins, José E.D., Wills, Martin

“…The use of a combination of IrCl 3 with a series of ligands derived from the C2-symmetric diamine diphenylethanediamine (DPEN) forms a catalyst capable of the…”
Get full text

Applications of N′-alkylated derivatives of TsDPEN in the asymmetric transfer hydrogenation of CO and CN bonds by Martins, José E.D., Contreras Redondo, Miguel A., Wills, Martin

Get full text

Asymmetric reduction of prochiral ketones using in situ generated oxazaborolidine derived from (1 S,2 S,3 R,4 R)-3-amino-7,7-dimethoxynorbornan-2-ol. An efficient synthesis of enantiopure ( R)-tomoxetine by Lapis, Alexandre A.M., de Fátima, Ângelo, Martins, José E.D., Costa, Valentim E.U., Pilli, Ronaldo A.

“…In this work, we report our results on the asymmetric reduction of prochiral aromatic and aliphatic ketones 3 , 5– 8 catalyzed by the novel in situ generated…”
Get full text

Further ‘tethered’ Ru(II) catalysts for asymmetric transfer hydrogenation (ATH) of ketones; the use of a benzylic linker and a cyclohexyldiamine ligand by Martins, Jose E.D., Morris, David J., Tripathi, Bhavana, Wills, Martin

“…The synthesis, characterisation and application to the asymmetric transfer hydrogenation (ATH) of ketones, of two new Ru(II) catalysts, 4 and 5, is described…”
Get full text

Ru(II) Complexes of N-Alkylated TsDPEN Ligands in Asymmetric Transfer Hydrogenation of Ketones and Imines by Martins, José E. D, Clarkson, Guy J, Wills, Martin

“…N-Alkylated TsDPEN derivatives bearing a small alkyl group act as highly efficient ligands in Ru(II) complexes for the asymmetric transfer hydrogenation of…”
Get full text

A Straightforward Synthesis of Enantiopure (1S,2R)-Ephenamine by Velho, Arthur, Martins, José

“…An enantioselective six-step synthesis of (1S,2R)-ephenamine starting from readily available chiral amino acid is disclosed presenting 26% overall yield and…”
Get full text

Asymmetric transfer hydrogenation of C=O and C=N bonds by tethered Rh(III) catalysts by Matharu, Daljit S, Martins, José E D, Wills, Martin

“…Rh(III) catalysts containing a tetramethylcyclopentadienyl group linked by a 'tether' to a tosylated diamine ligand have previously been reported by our group…”
Get full text

Applications of N′-alkylated derivatives of TsDPEN in the asymmetric transfer hydrogenation of C O and C N bonds by Martins, José E.D., Contreras Redondo, Miguel A., Wills, Martin

“…Arene/Ru(II) complexes of ( R, R)- N-alkyl-TsDPEN ligands are effective in the asymmetric transfer hydrogenation of ketones and imines in formic…”
Get full text

Synthesis of a series of novel N, N-dialkyl-TsDPEN ligands and their application to enantioselective addition of dialkylzinc to benzaldehyde by Martins, José E.D., Wills, Martin

“…A series of mono- and dialkylated derivatives of C2-symmetric N-tosyl-1,2-diphenylethylene diamines have been prepared and used as ligands for the enantiomeric…”
Get full text

Asymmetric hydrogenation of ketones using Ir(III) complexes of N-alkyl- N’-tosyl-1,2-ethanediamine ligands by Martins, José E.D., Morris, David J., Wills, Martin

“…The combination of an enantiomerically pure N′-alkylated derivative of N-4-toluenesulfonyl-1,2-diphenylethane-1,2-diamine (TsDPEN) with iridium trichloride…”
Get full text

Synthesis of chiral norbornane derivatives as γ-amino alcohol catalysts: the effect of the functional group positions on the chirality transfer by Martins, José E.D., Mehlecke, Clarissa M., Gamba, Muriell, Costa, Valentim E.U.

“…Starting from (1 S,4 R) chiral ketone (+)- 6, we developed a synthetic route to the synthesis of new chiral γ-amino alcohols (+)- and (−)-…”
Get full text

Evaluation of lipase from Candida rugosa in the resolution of endo-(±)-1,8,9,10,11,11-hexachloropentacyclo[6.2.1.1 3,6.0 2,7.0 5,9]dodecan-4-alcohol by Costa, Valentim E.U, Alifantes, João, Martins, Jose E.D

“…endo-(±)-1,8,9,10,11,11-Hexachloropentacyclo[6.2.1.1 3,6.0 2,7.0 5,9]dodecan-4-ol (±)- 7 and exo-(±)-1,8,9,10,11,11-hexachloropentacyclo[6.2.1.1 3,6.0 2,7.0…”
Get full text

The importance of the N-H bond in Ru/TsDPEN complexes for asymmetric transfer hydrogenation of ketones and imines by Soni, Rina, Cheung, Fung Kei, Clarkson, Guy C, Martins, Jose E D, Graham, Mark A, Wills, Martin

“…Ru(II) complexes of TsDPEN containing two alkyl groups on the non-tosylated nitrogen atom are poor catalysts for asymmetric transfer hydrogenation of ketones…”
Get more information

New Efficient Route to the Synthesis of Enantiopure (+) and (−) Bicyclo[2.2.1]heptan-syn-2,7-diol using Lipase-Catalyzed Transesterifications by Martins, José E. D., Oliveira, Luciane F. de, Costa, Valentim E. U.

“…Starting from racemic 7,7-dimethoxy-1,4,5,6-tetrachlorobicyclo[2.2.1]hept-5-en-2-endo-ol (±)-7, using lipase-catalyzed transesterification and a series of…”
Get full text

Study of the kinetic resolution of (±)-10- exo-hydroxy-pentacyclo[6.2.1.1 3,6.0 2,7.0 5,9]dodeca-4-one by lipase catalysis and the intramolecular racemization of the pure enantiomer by thermal dyotropic reaction by Martins, José E.D., Alifantes, João, Pohlmann, Adriana R., Costa, Valentim E.U.

“…In this work, the modified synthesis of (±)-10- exo-hydroxy-pentacyclo[6.2.1.1 3,6.0 2,7.0 5,9]dodeca-4-one (±)- 10 as well as its resolution by…”
Get full text