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From this literature《SuFEx-enabled, chemoselective synthesis of triflates, triflamides and triflimidates》,we know some information about this compound(56621-48-8)Reference of 4-(Piperazin-1-yl)phenol, but this is not all information, there are many literatures related to this compound(56621-48-8).

Li, Bing-Yu; Voets, Lauren; Van Lommel, Ruben; Hoppenbrouwers, Fien; Alonso, Mercedes; Verhelst, Steven H. L.; De Borggraeve, Wim M.; Demaerel, Joachim published the article 《SuFEx-enabled, chemoselective synthesis of triflates, triflamides and triflimidates》. Keywords: triflate triflamide triflimidate synthesis click reaction.They researched the compound: 4-(Piperazin-1-yl)phenol( cas:56621-48-8 ).Reference of 4-(Piperazin-1-yl)phenol. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:56621-48-8) here.

Sulfur(VI) Fluoride Exchange (SuFEx) chem. has emerged as a next-generation click reaction, designed to assemble functional mols. quickly and modularly. Here, we report the ex situ generation of trifluoromethanesulfonyl fluoride (CF3SO2F) gas in a two chamber system, and its use as a new SuFEx handle to efficiently synthesize triflates and triflamides. This broadly tolerated protocol lends itself to peptide modification or to telescoping into coupling reactions. Moreover, redesigning the SVI-F connector with a S=O → S=NR replacement, furnished the analogous triflimidoyl fluorides as SuFEx electrophiles, which were engaged in the synthesis of rarely reported triflimidate esters. Notably, experiments showed H2O to be the key towards achieving chemoselective trifluoromethanesulfonation of phenols vs. amine groups, a phenomenon best explained-using ab initio metadynamics simulations-by a hydrogen bonded termol. transition state for the CF3SO2F triflylation of amines.

From this literature《SuFEx-enabled, chemoselective synthesis of triflates, triflamides and triflimidates》,we know some information about this compound(56621-48-8)Reference of 4-(Piperazin-1-yl)phenol, but this is not all information, there are many literatures related to this compound(56621-48-8).

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem