1070237-01-2

Upstream product

• 75-52-5 nitromethane 
• 4358-87-6 (RS)-methyl mandelate 
• 15206-55-0 methyl 2-oxo-2-phenylacetate 

Downstream Products

• 1070237-57-8 (Z)-methyl 3-nitro-2-phenylacrylate 
• 105732-42-1 Methyl α-phenyl-β-nitropropionate 

Relevant academic research and scientific papers

Copper-Catalyzed Cross-Dehydrogenative Coupling of α-Hydroxy Esters with Nitromethane

An efficient copper-catalyzed tandem oxidation/nitroaldol reaction of hydroxyl compounds with nucleophiles is developed. In this work, -nitro-hydroxy esters were prepared via cross-dehydrogenative coupling reaction using -hydroxy esters as hydroxy compounds and nitromethane as a nucleophile. The reaction is believed to undergo an oxidation of the hydroxyl group and then an addition of the generated carbonyl group. It is an example of CDC reactions related to hydroxyl compounds via carbonyl intermediates.

Highly enantioselective construction of CF3-bearing all-carbon quaternary stereocenters: Hiral spiro-fused bisoxazoline ligands with 1,1′-binaphthyl sidearm for asymmetric Michael-type Friedel-Crafts reaction

A novel class of chiral spiro-fused bisoxazoline ligands possessing a deep chiral pocket was prepared. The developed ligands have been employed in the nickel-catalyzed highly enantioselective Michael-type Friedel-Crafts reaction, affording the products bearing a trifluoromethylated all-carbon quaternary stereocenter with moderate to excellent yields (up to 99%) and good to excellent enantioselectivies (up to > 99.9% ee). Moreover, a proposed model of chiral pocket revealed that the attack of indole from the Re-face of β-CF3-β-disubstituted nitroalkene was favorable.

Robust continuous-flow synthesis of deuterium-labeled ￠-nitroalcohols catalyzed by basic anion exchange resin

A practical and efficient continuous-flow system was developed for the synthesis of site-selectively deuterium-labeled ￠- nitroalcohols by using the tertiary amine-functionalized basic anion exchange resin, WA30, as a heterogeneous organocatalyst. For this system, WA30 was prepacked in a cartridge under metal-free conditions. The system was operated by pumping a solution of aldehydes or ketones, as electrophiles, and nitroalkanes in a solvent system of deuterium oxide and THF in the catalyst cartridge. Various deuterated ￠-nitroalcohols were obtained in moderate to excellent yields with high deuteration efficiencies. The continuous-flow system was applied in continuous synthesis for at least 72 h without degradation of the heterogeneous organocatalyst activity.

First Iridium-Catalyzed Highly Enantioselective Hydrogenation of β-Nitroacrylates

The first highly chemo- and enantioselective hydrogenation of β-nitroacrylates was accomplished with an iridium catalyst (Ir-4) with yields and enantioselectivities of up to 96% and 98% ee, respectively. The resulting α-chiral β-nitro propionates are attractive building blocks for the synthesis of chiral β2-amino acids, which are the core scaffolds of bioactive natural products, pharmaceuticals, and β-peptides.

Asymmetric friedel-crafts alkylation of α-substituted β-nitroacrylates: Access to β2,2-amino acids bearing indolic all-carbon quaternary stereocenters

A highly enantioselective Friedel-Crafts alkylation reaction of indoles with acyclic α-substituted β-nitroacrylates is developed under the catalysis of Ni(ClO4)2-bisoxazoline complex at 1 mol % catalyst loading, affording chiral indolic β-nitroesters bearing all-carbon quaternary stereocenters in excellent yields and ees of up to 97%. Transformation of one of the products to β2,2-amino ester and tetrahydro-β-carboline through nitro reduction and sequential Pictet-Spengler cyclization was exemplified.

Chiral-at-metal octahedral iridium catalyst for the asymmetric construction of an all-carbon quaternary stereocenter

Metal-templated organocatalysis: The enantioselective formation of an all-carbon quaternary stereocenter is catalyzed by the ligand sphere of an inert bis-cyclometalated iridium complex (see picture). In this complex, the metal-centered chirality serves as the sole source for the effective asymmetric induction. Copyright

Readily available hydrogen bond catalysts for the asymmetric transfer hydrogenation of nitroolefins

This paper focuses on readily accessible thiourea hydrogen bond catalysts derived from amino acids, whose steric and electronic features are modulated by their degree of substitution at the carbinol carbon center. These catalysts were applied in the asymmetric transfer hydrogenation of nitroolefins furnishing the chiral products in up to 99% yield and 86% enantiomeric excess. The proposed catalyst's mode of action is supported by mechanistic investigations.

Organocatalytic asymmetric transferhydrogenation of β-nitroacrylates: Accessing β2-amino acids

We describe a highly efficient and enantioselective Hantzsch ester mediated conjugate reduction of β-nitroacrylates that is catalyzed by a Jacobsen thiourea catalyst as a key step in a new route to optically active β2-amino acids. Copyright