Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Potassiumtris(1-pyrazolyl)borohydride, is researched, Molecular C9H10BKN6, CAS is 18583-60-3, about Metallaoxetene formation by coupling of carbamoyl and difluorocarbene ligands.Reference of Potassiumtris(1-pyrazolyl)borohydride.
The reaction of the carbamoyl complex [Fe{C(:O)NPri2}CF3(CO)2(PPh3)] with potassium hydrotris(pyrazol-1-yl)borate provides the structurally characterized ferraoxetene [Fe{CF2OC(NPri2)}(CO){HB(pz)3}] [I, L3 = HB(pz)3 where pz = pyrazol-1-yl], presumably via coupling of the carbamoyl ligand with a difluorocarbene intermediate.
After consulting a lot of data, we found that this compound(18583-60-3)Reference of Potassiumtris(1-pyrazolyl)borohydride can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics