The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Potassiumtris(1-pyrazolyl)borohydride( cas:18583-60-3 ) is researched.HPLC of Formula: 18583-60-3.Canty, Allan J.; Fritsche, Steven D.; Jin, Hong; Patel, Jim; Skelton, Brian W.; White, Allan H. published the article 《Water and Protic Acids as Oxidants for Platinum(II): Diorgano(hydrido)platinum(IV) and Diorgano(hydroxo)platinum(IV) Chemistry, Including Structural Studies of Poly(pyrazol-1-yl)borate Complexes Pt(OH)R2{(pz)3BH} (R = Methyl, p-Tolyl) and Pt(OH)Me2{(pz)4B}·H2O》 about this compound( cas:18583-60-3 ) in Organometallics. Keywords: crystal structure platinum hydroxo pyrazolylborato organo; mol structure platinum hydroxo pyrazolylborato organo; water oxidation platinum aryl Me pyrazolylborato; oxidative addition platinum aryl Me pyrazolylborato; hydrido platinum pyrazolylborato organo preparation decomposition; platinum organo pyrazolylborato preparation structure oxidation; hydroxo platinum organo pyrazolylborato preparation structure; arene reductive elimination platinum aryl hydrido. Let’s learn more about this compound (cas:18583-60-3).
The tris(pyrazol-1-yl)borate complexes K[PtR2{(pz)3BH}] (R = Me (1), p-tolyl (2)) may be isolated on addition of K[(pz)3BH] to solutions of [PtR2(SEt2)]2. Complexes 1, 2, and [PtMe2{(pz)4B}]- react with HOAc to form PtHR2{(pz)3BH} (R = Me (3), p-tolyl (5)) and PtHMe2{(pz)4B} (4). The hydridoplatinum(IV) complexes decompose at ∼140 (3) and ∼85 (4)° in toluene-d8 and ∼90° (5) in nitrobenzene-d5 to form methane (3, 4) and toluene (5), where isolation of 5 provided the 1st opportunity to study the decomposition of aryl(hydrido)platinum(IV) complexes. The hydridoplatinum(IV) complexes are deprotonated on addition of aqueous NaOH in acetone-d6 to form 1, 2, and [PtMe2{(pz)4B}]-. The hydroxoplatinum(IV) complexes Pt(OH)R2{(pz)3BH} (R = Me (6), p-tolyl (8)) or Pt(OH)Me2{(pz)4B}·H2O (7) may be readily isolated in 45-82% yield upon oxidation of the Pt(II) anions 1, 2, or [PtMe2{(pz)4B}]- by H2O. The hydridoplatinum(IV) complexes 3-5 also react slowly with H2O in acetone-d6 to form H2 and complexes 6-8. [PtR2{(pz)3BH}]- undergo oxidative-addition reactions with iodomethane to form PtMeR2{(pz)3BH} (R = Me, p-tolyl). The octahedral hydroxoplatinum(IV) complexes 6-8 are the 1st examples of Pt(IV) complexes formed on oxidation by H2O to be characterized by x-ray crystallog. The complexes display Pt-O distances of 1.974(8)-1.996(6) Å, and the Pt-N bond distances reflect the relative trans influences of the hydroxo and Me groups. The aqua group in Pt(OH)Me2{(pz)4B}·H2O (7) is H bonded to the hydroxoplatinum(IV) group to form a centrosym. dimer, such that it is not possible to ascertain whether the coordination environment of Pt is [Pt(OH)···H2O]2 or [Pt(OH2)+···OH-]2, although the former is believed to be more likely.
This literature about this compound(18583-60-3)HPLC of Formula: 18583-60-3has given us a lot of inspiration, and I hope that the research on this compound(Potassiumtris(1-pyrazolyl)borohydride) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics