Cu-Catalyzed Enantioselective Hydrogermylation: Asymmetric Synthesis of Unnatural β-Germyl α-Amino Acids
作者:Weidong Lin、Lijun You、Wei Yuan、Chuan He
DOI:10.1021/acscatal.2c04571
日期:2022.12.2
A copper-catalyzed asymmetricsynthesis of unnatural β-germyl α-amino acids is developed. This process undergoes an intermolecular enantioselective hydrogermylation of dehydroalanines with dihydrogermanes and trihydrogermanes, giving access to a variety of chiral β-germyl α-amino acid derivatives in decent yields with good to excellent enantioselectivities. Mechanistic studies indicate that a [Cu–Ge]
Six-membered cyclic germoxanes (R2GeO)(3) were selectively prepared via the thermal reaction of (alkyl)(2)-GeH2 in dimethylformamide (DMF). Linear metallagermoxanes with an E-O-Ge-O-E backbone (E = Si, Ge, Sn) were prepared by the reaction of Ph2GeH2 with R3EH in DMF. Their cyclic and linear germoxane formations were achieved using an iron catalyst, (eta(5)-C5H5)Fe(CO)(2)Me. An iron carbene complex was proposed to be an intermediate in the catalytic reaction.
Sennikov, P. G.; Skobeleva, S. E.; Kuznetsov, V. A., Journal of Organometallic Chemistry, 1980, vol. 201, p. 213 - 220
作者:Sennikov, P. G.、Skobeleva, S. E.、Kuznetsov, V. A.、Egorochkin, A. N.