10367-41-6

Upstream product

• 924-44-7 glyoxylic acid ethyl ester 
• 151-10-0 1,3-Dimethoxybenzene 
• 133730-34-4 2,4-dimethoxyphenylboronic acid 
• 6592-19-4 (2,4-dimethoxyphenyl)-glyoxalic acid ethyl ester 
• 91-52-1 2,4 dimethoxybenzoic acid 

Downstream Products

• 100947-62-4 5-(2,4-dimethoxyphenyl)-1,3-oxazolidine-2,4-dione 

Relevant academic research and scientific papers

Room temperature MgI2-catalyzed Friedel–Crafts reaction between electron-rich (het)arenes and ethyl glyoxylate

Magnesium iodide-catalyzed addition of electron-rich (het)arenes to ethyl glyoxylate proceeds at room temperature with high chemoselectivity to afford ethyl 2-(het)aryl- 2-hydroxyacetates in yields up to 95%.

Asymmetric hydrogenation of α-keto acid derivatives by rhodium-{amidophosphine-phosphinite} catalysts

The enantioselective hydrogenation of several α-keto esters (3a-f, 5a-j), α-keto amides (7a-e) and isatine derivatives (9a-d) with a set of four representative neutral homogeneous rhodium-amidophosphine-phosphinite catalysts has been investigated. Trifluoroacetate-Rh-AMPP catalytic precursors promoted the rapid, efficient synthesis of aliphatic α-hydroxy esters 4a-f in moderate to high enantioselectivities (66-95% eel, in contrast to most aromatic α-hydroxy esters 6a-j (8-81% eel. Best enantioselectivities for α-hydroxy amides 8a-e (85-95% eel and dioxindoIes 10a-d (80-94% eel were obtained with chloro-Rh-AMPP precursors. It is proposed that, contrary to α-keto amides, α-keto esters do not chelate onto the rhodium center and that, in such circumstances, the asymmetric induction is mainly controlled by the steric hindrance around the C=O function.

Palladium-Catalyzed Decarboxylative 1,2-Addition of Carboxylic Acids to Glyoxylic Acid Esters

The formation of C?C-bonds constitutes one of the most fundamental synthetic operations in organic chemistry. The nucleophilic addition of preformed organometallic reagents to an electrophilic carbonyl functionality represents a classical method for the selective construction of a C?C-bond. However, the synthesis and utilization of an organometallic reagent is associated with an unfavorable environmental profile. Herein, we disclose a Palladium-catalyzed decarboxylative 1,2-addition of carboxylic acids to glyoxylic acid esters. This novel method provides access to the mandelic acid scaffold in good yields. Easy-to-handle and readily available benzoic acids are utilized as more sustainable alternative to preformed organometallic nucleophiles.

Identification of a New Zinc Binding Chemotype by Fragment Screening

The discovery of a new zinc binding chemotype from screening a nonbiased fragment library is reported. Using the orthogonal fragment screening methods of native state mass spectrometry and surface plasmon resonance a 3-unsubstituted 2,4-oxazolidinedione fragment was found to have low micromolar binding affinity to the zinc metalloenzyme carbonic anhydrase II (CA II). This affinity approached that of fragment sized primary benzenesulfonamides, the classical zinc binding group found in most CA II inhibitors. Protein X-ray crystallography established that 3-unsubstituted 2,4-oxazolidinediones bound to CA II via an interaction of the acidic ring nitrogen with the CA II active site zinc, as well as two hydrogen bonds between the oxazolidinedione ring oxygen and the CA II protein backbone. Furthermore, 3-unsubstituted 2,4-oxazolidinediones appear to be a viable starting point for the development of an alternative class of CA inhibitor, wherein the medicinal chemistry pedigree of primary sulfonamides has dominated for several decades.

Autocatalytic one pot orchestration for the synthesis of α-arylated, α-amino esters

A novel acetyl chloride-mediated cascade transformation involving three components (benzyl carbamate, ethyl glyoxylate and arene nucleophiles) is reported. Aryl orthogonally protected α-amino acids are obtained in a one pot cascade, using a mild AcOH-AcCl system, via a critical autocatalytic dehydration-activation step ensuring an original and efficient Friedel-Crafts orchestration. The Royal Society of Chemistry 2014.

Combination of lithium chloride and hexafluoroisopropanol for friedel-crafts reactions

A combination of weak Lewis acid (LiCl) and weak Br?nsted acid (hexafluoroisopropanol, HFIP) promotes efficiently the Friedel-Crafts reaction of electron-rich aromatic compounds with ethyl glyoxylate. Georg Thieme Verlag Stuttgart.

ASYMMETRIC HYDROGENATION OF ACTIVATED KETO COMPOUNDS CATALYZED BY NEW CHIRAL PERALKYL-AMPP RHODIUM COMPLEXES

Readily available peralkyl aminophosphinephosphinite ligands (alkyl-AMPP) give neutral rhodium complexes active for the catalytic reduction of some activated ketones under atmospheric hydrogen pressure at ambient temperature (ee=80percent).