Nickel-Catalyzed β-Carboxylation of Ynamides with Carbon Dioxide
Nickel-Catalyzed β-Carboxylation of Ynamides with Carbon Dioxide
复制标题
镍催化二氧化碳与酰胺的 β-羧化反应
DOI:
10.1055/s-0037-1611529
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发表时间:
2019
期刊:
影响因子:
2
通讯作者:
Sato Yoshihiro
中科院分区:
文献类型:
--
作者:
Doi Ryohei;Okano Taichi;Abdullah Iman;Sato Yoshihiro
A nickel-catalyzed β-selective hydrocarboxylation of ynamides to give protected dehydro-β-amino acids was developed. The key to exclusive β-selectivity was the use of diethylzinc as a reductant in the presence of a magnesium salt. The reaction was conducted with bis(acetylacetonato)nickel(II) instead of costly and sensitive bis(1,5-cyclooctadiene)nickel(0). In addition, the optimized ligand was inexpensive 1,5-cyclooctadiene. Investigation of the substrate scope revealed that both nitrogen and alkyne substituents have marked effects on the reaction efficiency. We obtained experimental clues that indicated the formation of a vinylzinc intermediate that forms a C–C bond with CO2.
影响因子:
5.2
作者:
Saito, Nozomi;Katayama, Tomoyuki;Sato, Yoshihiro
通讯作者:
Sato, Yoshihiro
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Takimoto Masanori;Hou Zhaomin
通讯作者:
Hou Zhaomin