170900-66-0

Upstream product

• 329791-72-2 tert-butyl (1S)-(2-oxo-1-phenyl-2-(phenylamino)ethyl)carbamate 
• 499782-23-9 C₂₂H₂₀N₂O₃ 
• 724-91-4 2-amino-2,N-diphenylacetamide 
• 108-86-1 bromobenzene 
• 6485-52-5 L-phenylglycine amide 
• 591-50-4 iodobenzene 
• 2900-27-8 (2S)-2-[(tert-butoxycarbonyl)amino]-2-phenylethanoic acid 
• 62-53-3 aniline 
• 108-90-7 chlorobenzene 

Relevant academic research and scientific papers

Design, synthesis, and insecticidal activities of novel diamide derivatives with alpha-amino acid subunits

A series of diamide derivatives containing α-amino acids were designed and synthesized. These compounds were evaluated for their insecticidal activities against Plutella xylostella, Mythimna separate, Myzus persicae, and Tetranychus cinnabarinus. Most of the title compounds containing an l-phenylglycine skeleton were endowed with good activities at the concentration of 500 mg·L?1. Compounds (R)-A6 showed a potential value for further optimization as an insecticidal lead with the LC50 value of 86.8 mg·L?1.

Synthesis of chiral α-amino anilides via a DMEDA-promoted selective C─N coupling reaction of aryl halides and α-aminoamides

A DMEDA-promoted and copper-catalyzed approach has been designed for the coupling of aryl halides and chiral α-aminoamides to afford a range of functionalized chiral α-amino anilides. This method has a higher yield and better reproducibility than those under ligand-free conditions. Of the two amino groups in the same molecule, only the amide NH2 is observed to react, showing high regioselectivity. In addition, no racemization occurs, and the ee can reach 99%. For certain hydroxyl-containing substrates, such as L-tyrosine amide and L-threonine amide, addition of a phase transfer catalyst (15-Crown-5) is necessary for such a transformation.

Asymmetric henry reaction catalyzed by a chiral dinuclear nickel complex

Several chiral polyfunctional ligands were conveniently synthesized from l-amino acids and used to prepare the dinuclear complex in situ. A novel bimetallic catalyst containing dinuclear nickel was developed and applied to the asymmetric Henry reaction. With the assistance of N-methylmorpholine, good enantio selectivities (up to 91% ee) and moderate yields (up to 72%) were obtained for aryl, heteroaryl, and aliphatic aldehydes. The pathway was air tolerant and easily manipulated, and the reagents were readily available. Georg Thieme Verlag Stuttgart. New York.

Synthesis of chiral amino acid anilides by ligand-free copper-catalyzed selective N-arylation of amino acid amides

An atom-economic, practical and cost-effective protocol for synthesis of chiral amino acid anilides via ligand-free copper-catalyzed selective C-N cross coupling of chiral amino acid amides and aryl halides, hetereoaryl halides and a vinyl bromide has been developed. No racemization occurred during the C-N coupling. A plausible mechanism is proposed. Copyright

Liquid chromatographic resolution of tocainide and its analogues on a doubly tethered chiral stationary phase based on (+)-(18-Crown-6)-2,3,11,12- tetracarboxylic acid

A doubly tethered chiral stationary phase (CSP) based on (+)-(18-crown-6)-2,3,11,12-tetracarboxylic acid were applied to the liquid chromatographic resolution of racemic tocainide, an antiarrhythmic agent, and its analogues. The chiral recognition efficiency of the doubly tethered CSP for tocainide and its analogues was generally greater than that of the corresponding singly tethered CSP especially in terms of the resolution (RS). The resolution of tocainide and its analogues on the doubly tethered CSP were dependent on the content and the type of the organic and acidic modifiers in aqueous mobile phase and the column temperature. Especially, the retention behaviors of analytes on the doubly tethered CSP with the variation of the content of organic modifier in aqueous mobile phase were opposite to those on the corresponding singly tethered CSP and these opposite retention behaviors were rationalized by the lipophilicity differences of the two CSPs.

Enantioselective nickel-catalyzed conjugate addition of dialkylzinc to chalcones using chiral α-amino amides

A series of α-amino amides derived from natural amino acids (alanine, valine, phenylalanine, isoleucine, and phenylglycine) have been synthesized and fully characterized. Their Ni(II) complexes prepared from Ni(acac)2 catalyze the enantioselective conjugate addition of diethylzinc to chalcones in high yields and in good enantioselectivities (up to 84%). The side chain of the amino acid and the substituents in the amide nitrogen govern the enantioselectivity of the catalytic process.

Proline-based dipeptides with two amide units as organocatalyst for the asymmetric aldol reaction of cyclohexanone with aldehydes

A series of proline-based dipeptide organocatalysts with two amide units (1-16) have been developed and evaluated in the direct catalytic asymmetric aldol reactions of aldehydes with cyclohexanone. These catalysts showed good solubility in organic solvents compared with their corresponding carboxyl terminal dipeptides. The robust amide bond formation allowed structural modifications and fine tuning of catalyst properties by varying the stereo and electronic effects of the terminal amide to affect the ability of hydrogen bonding formation between the catalysts and the substrates. The reactions proceeded smoothly in high yields (up to 99%), enantioselectivities (up to 98% ee) and anti-diastereoselectivities (up to 99:1) in the presence of bifunctional organocatalyst 4 under the optimal reaction conditions.