87023-89-0

Basic information

• Product Name: N-(1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxopropan-2-yl)-4-methylbenzenesulfonamide
• Synonyms: N-(1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxopropan-2-yl)-4-methylbenzenesulfonamide
• CAS NO: 87023-89-0
• Molecular Weight: 321.4
• Mol File: 87023-89-0.mol

Chemical Properties

• CAS DataBase Reference: N-(1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxopropan-2-yl)-4-methylbenzenesulfonamide(CAS DataBase Reference)
• NIST Chemistry Reference: N-(1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxopropan-2-yl)-4-methylbenzenesulfonamide(87023-89-0)
• EPA Substance Registry System: N-(1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxopropan-2-yl)-4-methylbenzenesulfonamide(87023-89-0)

Safety Data

• Hazardous Substances Data: 87023-89-0(Hazardous Substances Data)

Upstream product

• 21957-58-4 N-(p-toluenesulfonyl)-DL-alanine 
• 87023-83-4 O-ethylphosphoric acid bis(3,5-dimethyl)pyrazolide 
• 37612-61-6 1-(3,5-dimethyl-1H-pyrazol-1-yl)propan-1-one 
• 55962-05-5 [N-(p-tolylsulfonyl)imino]phenyliodinane 
• 67-51-6 3,5-dimethyl-1H-pyrazole 

Downstream Products

• 91645-74-8 ethyl N-tosylalaninate 
• 64274-26-6 4-methyl-N-(1-oxo-1-phenylpropan-2-yl)benzene sulfonamide 
• 21957-58-4 N-(p-toluenesulfonyl)-DL-alanine 
• 57483-26-8 (+/-)-N₁-(1-methyl-2-oxoethyl)-4-methyl-1-benzenesulfonamide 
• 101289-30-9 N-(1-methyl-2-oxo-2-anilinoethyl)-p-toluenesulphonamide 
• 132568-40-2 N-[N-(toluene-4-sulfonyl)-alanyl]-alanine ethyl ester 

Relevant articles and documents

Direct Catalytic Chemoselective α-Amination of Acylpyrazoles: A Concise Route to Unnatural α-Amino Acid Derivatives

A direct copper-catalyzed highly chemoselective α-amination is described. Acylpyrazole proved to be a highly efficient enolate precursor of a carboxylic acid oxidation state substrate, while preactivation by a stoichiometric amount of strong base has been used in catalytic α-aminations. The simultaneous activation of both coupling partners, enolization and metal nitrenoid formation, was crucial for obtaining the product, and wide functional group compatibility highlighted the mildness of the present catalysis. The bidentate coordination mode was amenable to highly chemoselective activation over ketone and much more acidic nitroalkyl functionality. Deuterium exchange experiments clearly demonstrated that exclusive enolization of acylpyrazole was achieved without the formation of a nitronate. The present catalysis was applied to late-stage α-amination, allowing for concise access to highly versatile α-amino acid derivatives. The product could be transformed into variety of useful building blocks.