276249-49-1

Basic information

• Product Name: trifluoromethanesulfonic acid 5-methyl-2-phenyl-2H-pyrazol-3-yl ester
• Synonyms: trifluoromethanesulfonic acid 5-methyl-2-phenyl-2H-pyrazol-3-yl ester
• CAS NO: 276249-49-1
• Molecular Weight: 306.265
• Mol File: 276249-49-1.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: trifluoromethanesulfonic acid 5-methyl-2-phenyl-2H-pyrazol-3-yl ester(CAS DataBase Reference)
• NIST Chemistry Reference: trifluoromethanesulfonic acid 5-methyl-2-phenyl-2H-pyrazol-3-yl ester(276249-49-1)
• EPA Substance Registry System: trifluoromethanesulfonic acid 5-methyl-2-phenyl-2H-pyrazol-3-yl ester(276249-49-1)

Safety Data

• Hazardous Substances Data: 276249-49-1(Hazardous Substances Data)

Upstream product

• 37595-74-7 N,N-phenylbistrifluoromethane-sulfonimide 
• 89-25-8 edaravone 
• 19735-89-8 3-methyl-1-phenylpyrazolin-5(4H)-one 
• 108388-06-3 N-fluorobis<(trifluoromethyl)sulfonyl>imide 
• 358-23-6 trifluoromethylsulfonic anhydride 

Downstream Products

• 1373936-68-5 3-methyl-1-phenyl-4-(trifluoromethylsulfonyl)-1H-pyrazol-5-ol 
• 3729-90-6 3-methyl-1,5-diphenyl-1H-pyrazole 
• 90276-22-5 5-(4-methoxy-phenyl)-3-methyl-1-phenyl-1H-pyrazole 

Relevant articles and documents

N-Fluoro-bis[(trifluoromethyl)sulfonyl]imide: Interesting reactions involving nucleophilic attack on sulfonyl groups

N-Fluoro-bis[(trifluoromethyl)sulfonyl]imide (1) undergoes reaction with a variety of nucleophiles to give a number of interesting products. Under suitable conditions, the sulfonyl group on 1 is subject to nucleophilic attack forming N-fluoro-trifluoromethylsulfonyl amide (3) and Nu-SO2CF3. Surprisingly, 3 can also function as a weak nucleophile in the absence of other stronger bases.

Pyrazolin-5-ylidene palladium(II) complexes: Synthesis, characterization, and application in the direct arylation of pentafluorobenzene

Ten palladium(II) complexes bearing a pyrazolin-5-ylidene ligand have been synthesized by oxidative addition and silver carbene transfer pathways. The weakly bound acetonitrile ligand in the initially obtained trans-[PdBr 2(MeCN)(Pyry)] complex (6, Pyry = 1-phenyl-2,3-dimethylpyrazolin-5- ylidene) could be replaced by other donor ligands, and additional NHC ligands were introduced either by silver carbene transfer reactions or via reaction with in situ generated free carbenes. Using our previously reported 13C NMR-based electronic parameter, the pyrazolin-5-ylidene ligand is estimated to be among the most strongly donating ligands on our scale so far. The complexes obtained were employed as catalysts for the direct arylation of pentafluorobenzene with moderate to good yields under optimized conditions.

Palladium-catalyzed coupling of pyrazole triflates with arylboronic acids

A general protocol for the palladium-mediated Suzuki coupling reaction of pyrazole inflates and aryl boronic acids has been developed. The use of additional dppf ligand was determined to increase product yields allowing for the use of a broad range of rea