Taylor, Scott D. published the artcileA Fresh Look at the Staudinger Reaction on Azido Esters: Formation of 2H-1,2,3-Triazol-4-ols from α-Azido Esters Using Trialkyl Phosphines, Computed Properties of 27412-71-1, the main research area is triazolol preparation; azido acid ester preparation reaction phosphine.
Ph esters of α-azido acids react with trialkylphosphines in THF/H2O to give 5-substituted 2H-1,2,3-triazol-4-ols in good to excellent yields. In contrast, their reaction with PPh3 in THF/H2O give the amino esters as the major product and no triazoles. Reaction between an α-azido Ph ester and P(OEt)3 provided the corresponding phosphoramidate in excellent yield, but no triazole was formed. The authors warn that 5,5-diphenyl-3,5-dihydro-4H-1,2,3-triazol-4-one and 1,2,3-triazaspiro[4.4]non-1-en-4-one decompose explosively at higher temperatures
Organic Letters published new progress about Crystal structure. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, Computed Properties of 27412-71-1.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics