Amino Aldehydes (amino + aldehyde)

Distribution by Scientific Domains


Selected Abstracts


Rhodium-Catalyzed Asymmetric Hydroformylation of N -Allylamides: Highly Enantioselective Approach to ,2 -Amino Aldehydes,

ANGEWANDTE CHEMIE, Issue 24 2010
Xiaowei Zhang
N -Allylamide undN -Allylsulfonamide wurden mithilfe eines Rhodium-Yanphos-Katalysators asymmetrisch hydroformyliert. Dabei wurden ,2 -Aminoaldehyde, -säuren und -alkohole mit ausgezeichneten Enantioselektivitäten erhalten (siehe Schema; TON=Umsatzzahl, acac=Acetylacetonat). [source]


ChemInform Abstract: Synthesis of Novel Indole-Based Ring Systems by Acid-Catalyzed Condensation from ,-Amino Aldehydes and L-Trp-OMe.

CHEMINFORM, Issue 31 2008
Paolo Grieco
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


Organocatalyzed Asymmetric ,-Hydroxyamination of ,-Branched Aldehydes: Asymmetric Synthesis of Optically Active N-Protected ,,,-Disubstitued Amino Aldehydes and Amino Alcohols.

CHEMINFORM, Issue 14 2007
Sung-Gon Kim
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


The Baylis,Hillman Reaction with Chiral ,-Amino Aldehydes under Racemization-Free Conditions.

CHEMINFORM, Issue 25 2006
Fernando Coelho
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


Procedure for the Oxidation of ,-Amino Alcohols to ,-Amino Aldehydes.

CHEMINFORM, Issue 14 2006
Maxim E. Sergeev
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


A Novel Synthesis of Cyclic ,-Amino Aldehydes, Amino Alcohols, and ,-Amino Acid Methyl Esters from Cyclic Ketones Through Sulfinylaziridines.

CHEMINFORM, Issue 34 2004
Hiroyuki Ota
Abstract For Abstract see ChemInform Abstract in Full Text. [source]


ChemInform Abstract: Stereoselective Cyanation of Chiral ,-Amino Aldehydes by Reaction with Nagata,s Reagent: A Route to Enantiopure ,-Amino-,-hydroxy Acids.

CHEMINFORM, Issue 31 2001
Jose M. Andres
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


Diastereoselective Aldol Reaction of N,N-Dibenzyl-,-amino Aldehydes with Ketones Catalyzed by Proline.

CHEMINFORM, Issue 30 2004
Qiangbiao Pan
Abstract For Abstract see ChemInform Abstract in Full Text. [source]


Aldol Additions of Dihydroxyacetone Phosphate to N -Cbz-Amino Aldehydes Catalyzed by L -Fuculose-1-Phosphate Aldolase in Emulsion Systems: Inversion of Stereoselectivity as a Function of the Acceptor Aldehyde

CHEMISTRY - A EUROPEAN JOURNAL, Issue 5 2005
Laia Espelt Dr.
Abstract The potential of L -fuculose-1-phosphate aldolase (FucA) as a catalyst for the asymmetric aldol addition of dihydroxyacetone phosphate (DHAP) to N -protected amino aldehydes has been investigated. First, the reaction was studied in both emulsion systems and conventional dimethylformamide (DMF)/H2O (1:4 v/v) mixtures. At 100,mM DHAP, compared with the reactions in the DMF/H2O (1:4) mixture, the use of emulsion systems led to two- to three-fold improvements in the conversions of the FucA-catalyzed reactions. The N -protected aminopolyols thus obtained were converted to iminocyclitols by reductive amination with Pd/C. This reaction was highly diastereoselective with the exception of the reaction of the aldol adduct formed from (S)- N -Cbz-alaninal, which gave a 55:45 mixture of both epimers. From the stereochemical analysis of the resulting iminocyclitols, it was concluded that the stereoselectivity of the FucA-catalyzed reaction depended upon the structure of the N -Cbz-amino aldehyde acceptor. Whereas the enzymatic aldol reaction with both enantiomers of N -Cbz-alaninal exclusively gave the expected 3R,4R configuration, the stereochemistry at the C-4 position of the major aldol adducts produced in the reactions with N -Cbz-glycinal and N -Cbz-3-aminopropanal was inverted to the 3R,4S configuration. The study of the FucA-catalyzed addition of DHAP to phenylacetaldehyde and benzyloxyacetaldehyde revealed that the 4R product was kinetically favored, but rapidly disappeared in favor of the 4S diastereoisomer. Computational models were generated for the situations before and after CC bond formation in the active site of FucA. Moreover, the lowest-energy conformations of each pair of the resulting epimeric adducts were determined. The data show that the products with a 3R,4S configuration were thermodynamically more stable and, therefore, the major products formed, in agreement with the experimental results. [source]