96392-53-9

Upstream product

• 496871-35-3 benzoic acid-(β-amino-phenethyl ester) 
• 98-88-4 benzoyl chloride 
• 20989-17-7 Phenylglycinol 
• 81187-69-1 2,4-diphenyl-4,5-dihydro-1,3-oxazole 
• 7732-18-5 water 
• 7664-41-7 ammonia 
• 304-59-6 Rochelle's salt 
• 93-58-3 benzoic acid methyl ester 
• 98-91-9 thiobenzoic acid 
• 875-74-1 (R)-phenylglycine 
• 176503-80-3 1-benzoylamino-2-chloro-1-phenylethane 
• 6097-58-1 ethyl 2-phenyl-2-aminoacetate 
• 614-47-1 1,3-diphenyl-propen-3-one 
• 24806-73-3 (-)-trans-2,4-diphenyl-5-benzoyl-2-oxazoline 

Downstream Products

• 802590-15-4 C₁₅H₁₃NS 

Relevant academic research and scientific papers

Simple Synthesis of Amides via Their Acid Chlorides in Aqueous TPGS-750-M

The technology of surfactant chemistry is employed for amide bond construction via the reaction of acyl chlorides with amines in 2 wt % TPGS-750-M aqueous solution. Specifically, this highly efficient method enables a chromatography-free scalable process and recycling of the TPGS-750-M solution.

3,6-Di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz) catalysed metal-free amide bond formation from thioacids and amines at room temperature

A 3,6-di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz) catalysed efficient, mild and metal-free method has been developed for direct amide bond synthesis from simple thioacids and amines as starting materials. This methodology is useful for aromatic, aliphatic, and heteroaromatic thioacids as well as primary, secondary, heterocyclic, and even functionalized amines. A wide substrates scope, operationally mild conditions, and acylation of amines without affecting other functional groups such as alcohols, esters, carbodithioates, among others make this strategy very attractive and practical.

Resolution of racemic amines via lipase-catalyzed benzoylation: Chemoenzymatic synthesis of the pharmacologically active isomers of labetalol

Lipase-catalyzed benzoylation of amines was shown to be feasible, in some cases with high enantioselectivity, and the best results were obtained using immobilized lipase from Candida antarctica (Novozym 435) and methyl benzoate as acyl donor in the presence of molecular sieves. The procedure was optimized for the resolution of (±)-1-methyl-3-phenylpropylamine, a key intermediate in the synthesis of antihypertensive drug labetalol, and the enantiopure (R)-benzamide was then converted into the pharmacologically active isomers of the drug. In comparison with the reported synthesis of chiral isomers of labetalol, this chemoenzymatic route offers the advantage in the lack of any chiral stoichiometric auxiliary.

Iron-catalyzed benzamide formation. Application to the synthesis of moclobemide

A convenient and user-friendly method to yield benzamides from primary and secondary amines and various benzylic alcohols in the presence of a cheap iron salt (FeCl2·4H2O) and tert-butylhydroperoxide (70% in water) as a stoichiometric oxidant is described. Control experiments indicated that this reaction might involve radical species. This method proved to be general, generating a family of 30 benzamides and was applied to the preparative synthesis of anti-anxiety drug moclobemide.

Iron-catalyzed benzamide formation. Application to the synthesis of moclobemide

A convenient and user-friendly method to yield benzamides from primary and secondary amines and various benzylic alcohols in the presence of a cheap iron salt (FeCl2$4H2O) and tert-butylhydroperoxide (70% in water) as a stoichiometric oxidant is described. Control experiments indicated that this reaction might involve radical species. This method proved to be general, generating a family of 30 benzamides and was applied to the preparative synthesis of anti-anxiety drug moclobemide.

A facile synthesis of 2,4-disubstituted thiazoles using MnO2

Structurally diverse thiazoles with electron-donating and electron-withdrawing groups were conveniently synthesized through manganese dioxide (MnO2) oxidation of the corresponding thiazolines. The effect of substitution at the 2- and 4-positions was investigated. The desired thiazoles with aryl or vinyl substitutions at the 2- or 4-position can be obtained in good to excellent yields.

Process for the enantioselective preparation of phenylisoserine derivatives

Process for the enantioselective preparation of phenylisoserine derivatives of general formula (I) STR1 from phenylglycine S(+) wherein R is a phenyl radical or a tert butoxy radical and R is an alcohol protective group.

ONE STEP SYNTHESIS OF AZIRIDINES BY THE MICHAEL TYPE ADDITION OF FREE SULFIMIDES

The Michael type additions of diphenyl N-unsubstituted sulfimide (free sulfimide) to various electrophilic olefins were carried out.The reaction with cis- and trans-dibenzoylethylene, dimethylfumarate, dimethylmaleate, benzalacetophenone and benzalacetone gave mainly the corresponding trans-2-acylaziridines and trans-enaminoketones.However, phenyl vinyl sulfone or acrylonitrile afforded not the corresponding aziridine but diphenyl-N-2-cyano or N-2-phenylsulfonylethylsulfimide, a simple Michael adduct.When optically active (+)-(R)-o-methoxyphenylphenyl free sulfimide was treated with such an α,β-unsaturated carbonyl compound as benzalacetophenone, an optically active 2-acylaziridine, i.e., (-)-trans-2-benzoyl-3-phenylaziridine was obtained in ca 30percent optical purity and its absolute configuration was assigned as (2R,3S) upon chemical transformation to the configurationally known 2-phenyl-2-benzoylamino-1-ethanol or by comparing its CD spectrum with that of (1R,2R)-1-phenyl-2-benzoyl-cyclopropane.Meanwhile, (-)-(S)-o-methoxyphenylphenyl free sulfimide was found to react with benzalacetophenone to afford (+)-trans-2-benzoyl-3-phenylaziridine of 25percent optical purity.Effects of solvent and temperature on both the distribution of the products ratio and the optical yield were examined.