N-甲基二乙醇胺 、 di(2-thienyl)germane 以
neat (no solvent) 为溶剂,
以81%的产率得到2,2-di(2-thienyl)-6-methyl-1,3-dioxa-6-aza-2-germacyclooctane
参考文献:
名称:
A new pathway for the synthesis of 1,3-dioxa-6-aza-2-germacyclooctanes: molecular structure of 2,2-di(2-thienyl)-6-methyl-1,3-dioxa-6-aza-2-germacyclooctane
摘要:
A novel reaction pathway has been applied for the synthesis of 1,3-dioxa-6-aza-2-germacyclooctanes. Compounds of this type were obtained by the dehydrocondensation of di(2-thienyl)germane and diethanolamines without a catalyst. The molecular structure of 2,2-di(2-thienyl)-6-methyl-1,3-dioxa-5-azacyclooctane has been determined by X-ray diffraction study. The interatomic N --> Ge distance of 2.446 Angstrom indicates the presence of a weak transannular bond.
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]