63366-67-6Relevant academic research and scientific papers
Reactions of titanium hydrazides with silanes and boranes: N-N bond cleavage and N atom functionalization
Stevenson, Laura C.,Mellino, Simona,Clot, Eric,Mountford, Philip
supporting information, p. 10140 - 10143 (2015/09/01)
Reaction of Ti(N2iPrN)(NNPh2)(py) with Ph(R)SiH2 (R = H, Ph) or 9-BBN gave reductive cleavage of the Nα-Nβ bond and formation of new silyl- or boryl-amido ligands. The corresponding reactions of CpTi{MeC(NiPr)2}(NNR2) (R = Me or Ph) with HBPin or 9-BBN gave borylhydrazido-hydride or borylimido products, respectively. Nα and Nβ atom transfer and dehydrogenative coupling reactions are also reported.
Contributions to the Chemistry of Boron, 229. A Deceiving X-ray Single-Crystal Structure Determination: Amino-Hydrogen Exchange in Amino-alkynylboranes and ab initio Investigations of Alkynylboranes, Borirenes, and Boraallenes
Metzler, Nils,Noeth, Heinrich
, p. 711 - 718 (2007/10/03)
Dimeric(dimethylamino)(phenylethynyl)borane (2)2 is formed by the reaction of bis(dimethylamino)(phenylethynyl)borane (1) with 9-BBN-H.An X-ray single-crystal diffraction study revealed a central B2N2 four-membered ring for (2)2 with both alkynyl groups pointing to the same side in a cisoid arrangement.However, solution and solid-state NMR as well as ab initio calculations on model compounds show that the cis arrangement in the crystal chosen for X-ray diffraction is not representative of the bulk material, which consists of both cis and trans isomers.Further investigations of the competition between hydrogen-amino group exchange and hydroboration in the reaction of amino-alkynylboranes with hydroborating agents (9-BBN-H and catB-H) show the exchange to be much faster even in the presence of Wilkinson's catalyst and with cyclic amino-alkynylboranes such as 1,3-dimethyl-2--1,3,2-diazaborolidine (3).Ab initio calculations on alkynylboranes I, borirenes II, and boraallenes III, which are all geometrical isomeres, show alkynylboranes to be the most stable isomers only if strongly ?-donating groups X (X = NH2, F) are attached to the boron atom.In any case, boraallenes are highest in energy. - Keywords: Alkynylboranes; Borirenes; Boraallenes; Calculations, ab initio; Hydroboration
Pyrazole derivatives of 9-borabicyclo[3.3.1]nonane
Komorowski,Meller,Niedenzu
, p. 538 - 541 (2008/10/08)
9-(Dimethylamino)-9-borabicyclo[3.3.1]nonane, (C8H14)BN(CH3)2, reacts with 1 molar equiv of pyrazole (=Hpz) to form the complex (C8H14)B(pz)·(CH3)2NH and with additional Hpz to yield (C8H14)B(pz)·Hpz. The latter complex is also obtained by the reaction of 9-borabicyclo[3.3.1]nonane dimer, [(C8H4)BH]2 (=9-BBN), with Hpz. The adduct can be deprotonated to form [(C8H14)B(Pz)2]-, which reacts with PdCl2 to yield Pd[(μ-pz)2B(C8H14)]2. This same Pd complex is obtained when (C8H14)B-(pz)·(CH3)2NH is reacted with NaH and then with [ClPd(π-CH2CHCH2)]2 in boiling benzene, whereas at room temperature the latter reaction yields the complex [(pz)Pd(π-CH2CHCH2)]2. Reaction of [(C8H14)B(pz)2]- with [ClPd(π-CH2CHCH2)]2 yields the complex (C8H14)B(μ-pz)2Pd(μ-CH 2CHCH2). The pyrazabole (C8H14)B(μ-Pz)2B(C8H 14) is obtained by the reaction of (C8H14)B(pz)·Hpz with 9-BBN, the direct interaction of 9-BBN with Hpz, or the thermal decomposition of (C8H14)B(pz)· (CH3)2NH in molten Hpz. A relative of this pyrazabole, i.e., (C8H14)B(μ-pz)(μ-NHCH3)B(C 8HI4), is obtained by the reaction of (C8H14)B(pz)·CH3NH2 with 9-BBN.
