New expanded-ring NHC platinum(0) complexes: Synthesis, structure and highly efficient diboration of terminal alkenes
作者:Sergey A. Rzhevskiy、Maxim A. Topchiy、Konstantin A. Lyssenko、Anna N. Philippova、Maria A. Belaya、Alexandra A. Ageshina、Maxim V. Bermeshev、Mikhail S. Nechaev、Andrey F. Asachenko
DOI:10.1016/j.jorganchem.2020.121140
日期:2020.4
The synthesis and structural characterization of a series of novel platinum(0) complexes were reported. A number of (NHC)Pt(dvtms) (dvtms = 1,3-divinyl-1,1,3,3-tetramethyldisiloxane) complexes were investigated in catalytic addition of B2Pin2 to terminal alkenes. The novel expanded ring N-heterocyclic carbene complex (7-Dipp)Pt(dvtms) showed highest performance, turnover numbers up to 3800 were achieved
Base-controlled highly selective synthesis of alkyl 1,2-bis(boronates) or 1,1,2-tris(boronates) from terminal alkynes
作者:Guoliang Gao、Jianxiang Yan、Kai Yang、Fener Chen、Qiuling Song
DOI:10.1039/c7gc01161j
日期:——
highly regioselective synthesis of alkyl 1,2-bis(boronates) or 1,1,2-tris(boronates) from various terminalalkynes has been disclosed. These reactions are efficient, practical and mild with good regioselectivity, excellent functional group tolerance as well as good scalability, which provide general and complementary methods to access multiborylated alkanes from various terminalalkynes.
Aminoazanium of DABCO: An Amination Reagent for Alkyl and Aryl Pinacol Boronates
作者:Xingxing Liu、Qing Zhu、Du Chen、Lu Wang、Liqun Jin、Chao Liu
DOI:10.1002/anie.201913388
日期:2020.2.10
The aminoazanium of DABCO (H2 N-DABCO) has been developed as a general and practical amination reagent for the direct amination of alkyl and aryl pinacolboronates. This compound is stable and practical for use as a reagent. Various primary, secondary. and tertiary alkyl-Bpin and aryl-Bpin substrates were aminated to give the corresponding amine derivatives. The amination is stereospecific. The anti-Markovnikov
Copper-Catalyzed Coupling of Alkyl Vicinal Bis(boronic Esters) to an Array of Electrophiles
作者:Ningxin Xu、Ziyin Kong、Johnny Z. Wang、Gabriel J. Lovinger、James P. Morken
DOI:10.1021/jacs.2c02817
日期:2022.10.5
between vicinal bis(boronic esters) and allyl, alkynyl, and propargyl electrophiles as well as a simple proton. Because the reactive substrates are vicinal bis(boronic esters), the cross-coupling described herein provides an expedient new method for the construction of boron-containing reaction products from alkenes. Mechanistic experiments suggest that chelated cyclic ate complexes may play a role in