1373393-11-3Relevant articles and documents
Lanthanide aryloxides catalyzed hydroboration of aldehydes and ketones
Zhu, Zhangye,Dai, Ping,Wu, Zhenjie,Xue, Mingqiang,Yao, Yingming,Shen, Qi,Bao, Xiaoguang
, p. 26 - 30 (2018)
The lanthanide aryloxides Ln(OAr)3(THF)2 (Ar = Ar1 = 2,6-tBu2-4-MeC6H2, Ln = Yb (1), Y (2); Ar = Ar2 = 2,6-iPr2C6H3, Ln = Y (3); Ar = Ar3 = 2,6-Me2C6H3, Ln = Y (4); Ar = Ar1, Ln = Sm (5), Nd (6)) could be served as highly efficient catalysts for the hydroboration of aldehydes and ketones with good functional group tolerance and excellent chemoselectivity. Computational studies were carried out to probe a feasible mechanism of the Ln-aryloxides catalyzed hydroboration of aldehydes/ketones.
Investigation of N-Heterocyclic Carbene-Supported Group 12 Triflates as Pre-catalysts for Hydrosilylation/Borylation
Roy, Matthew M. D.,Ferguson, Michael J.,McDonald, Robert,Rivard, Eric
, p. 18236 - 18246 (2016)
N-Heterocyclic carbene (NHC) complexes of Cd and Hg triflates (OTf) were prepared and their attempted conversion into rare cadmium and mercury hydrides was explored. In contrast to zinc, which forms stable [ZnH]+complexes with NHCs, the heavier Cd and Hg congeners could not be formed; the increased instability of Cd-H and Hg-H units was rationalized with the aid of computations. It was also discovered that the dimeric adduct [IPr?Cd(μ-OTf)2]2(IPr=[(HCNDipp)2C:]; Dipp=2,6-iPr2C6H3) is an active precatalyst for the hydrosilylation and hydroborylation of hindered aldehydes and ketones. The related zinc congener was inactive as a catalyst highlighting a distinct advantage of using heavy Group 12 metals to promote catalytic hydrosilylation/borylation.
METHOD FOR PREPARING BORATE ESTER ON BASIS OF TRICYCLOPENTADIENYL RARE EARTH METAL COMPLEX
-
Paragraph 0043, (2021/05/14)
Disclosed is a method for preparing a borate ester on the basis of a tricyclopentadienyl rare earth metal complex, the method comprising the following steps: uniformly stirring and mixing a catalyst, a borane and a carbonyl compound for reaction to prepar
Pincer-Supported Gallium Complexes for the Catalytic Hydroboration of Aldehydes, Ketones and Carbon Dioxide
Liu, Lingyu,Lo, Siu-Kwan,Smith, Cory,Goicoechea, Jose M.
supporting information, p. 17379 - 17385 (2021/11/03)
Gallium hydrides stabilised by primary and secondary amines are scarce due to their propensity to eliminate dihydrogen. Consequently, their reactivity has received limited attention. The synthesis of two novel gallium hydride complexes HGa(THF)[ON(H)O] and H2Ga[μ2-ON(H)O]Ga[ON(H)O] ([ON(H)O]2?=N,N-bis(3,5-di-tert-butyl-2-phenoxy)amine) is described and their reactivity towards aldehydes and ketones is explored. These reactions afford alkoxide-bridged dimers through 1,2-hydrogallation reactions. The gallium hydrides can be regenerated through Ga?O/B?H metathesis from the reaction of such dimers with pinacol borane (HBpin) or 9-borabicyclo[3.3.1]nonane (9-BBN). These observations allowed us to target the catalytic reduction of carbonyl substrates (aldehydes, ketones and carbon dioxide) with low catalyst loadings at room temperature.
