Synthesis and spectroscopic characteristics of aryltrimethyl-silicon, -germanium, and -tin compounds
作者:S.M. Moerlein
DOI:10.1016/0022-328x(87)80344-3
日期:1987.1
The synthesis and spectroscopic characteristics of 28 para-substituted aryltrimethyl-silicon, -germanium, and -tincompounds are described. The infrared spectra show characteristic bands at 1245–1165 (methyl bend), 840–765 (methyl rock), and 1105–1020 (in-plane aromatic H bend) cm−1; the frequency of the last band was found to depend on the sum of the aromatic substituent masses, the presence or absence
Higher Carbon Analogues of 1,4‐Dihydropyridines as Potent TGFβ/Smad Inhibitors
作者:Eva R. Barth、Daniel Längle、Fabian Wesseler、Christopher Golz、Anna Krupp、Dennis Schade、Carsten Strohmann
DOI:10.1002/ejic.201901223
日期:2020.1.16
necessary for the analogue buildingblocks to withstand the synthetic conditions. Here, we present the synthesis of Si and Ge analogues of a TGFβ inhibiting 1,4‐dihydropyridine, which has a tetrahedral carbon in an important position for its activity. The molecular properties are compared by the discussion of the single X‐ray crystal structures and the electrostatic potential on the molecule surface which
Co-catalyzed arylation of aldehydes and aryltrimethylgermanes
作者:Qiang Zhang、Xiao Zou、Ningqi Zhang、Bo Liu
DOI:10.1039/d3ra00836c
日期:——
A novel cobalt-catalyzed protocol for the synthesis of carbinol derivatives and benzil derivatives has been developed. In the presence of CoI2 as the catalyst and tmphen (3,4,7,8-tetramethyl-1,10-phenanthroline) as the ligand, the corresponding arylated products were obtained from the addition of aryltrimethylgermanes to aromatic aldehydes and arylglyoxals in moderate to excellent yields under air
A nickel-catalyzed three-component carboamination of the biphenylene C–C σ-bond has been developed. Arylboronates and hydroxylamine derivatives work as carbon nucleophiles and nitrogen electrophiles, respectively, and the corresponding difunctionalized ring-opening products are obtained in good yields. The arylboronate nucleophile can be replaced with B2pin2 (boron nucleophile) and H–Si(OMe)3 (hydride