Reductive N-Alkylation of Nitroarenes: A Green Approach for the N-Alkylation of Natural Products
摘要:
A simple, mild, cost-effective, and green approach for the reductive mono-N-alkylation of nitroarenes has been developed. HOAc/Zn are utilized as the reducing system together with a carbonyl compound as an alkyl source in methanol. Excellent yields were obtained with stoichiometric control of mono- over dialkylated products. Application to five complex natural products demonstrated the practical utility of the method.
Reductive <i>N</i>-Alkylation of Nitroarenes: A Green Approach for the <i>N</i>-Alkylation of Natural Products
作者:Amir E. Wahba、Mark T. Hamann
DOI:10.1021/jo300303d
日期:2012.5.18
A simple, mild, cost-effective, and green approach for the reductive mono-N-alkylation of nitroarenes has been developed. HOAc/Zn are utilized as the reducing system together with a carbonyl compound as an alkyl source in methanol. Excellent yields were obtained with stoichiometric control of mono- over dialkylated products. Application to five complex natural products demonstrated the practical utility of the method.
Catalytic Asymmetric Reductive Amination of α-Branched Ketones
作者:Vijay N. Wakchaure、Jian Zhou、Sebastian Hoffmann、Benjamin List
DOI:10.1002/anie.201001715
日期:2010.6.21
Branching out: An organocatalytic reductive amination of α‐branched ketones using dynamic kinetic resolution is reported. The cis‐2‐substituted cyclohexyl amines were obtained in high diastereoselectivity and enantioselectivity from the corresponding ketones.