Visible-Light-Induced Photoaddition of <i>N</i>-Nitrosoalkylamines to Alkenes: One-Pot Tandem Approach to 1,2-Diamination of Alkenes from Secondary Amines
作者:Dilip V. Patil、Tengda Si、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.1c00786
日期:2021.4.16
excitation at 453 nm. The developed visible-light-promoted photoadditionreaction of N-nitrosoamines to alkenes was combined with the o-NQ-catalyzed aerobic oxidation protocol of amines to telescope the direct handling of harmful N-nitroso compounds, where the desired α-amino oxime derivatives were obtained in a one-pot tandem N-nitrosation and photoaddition sequence.
of E- and Z-α-aminoacetophenone oximes depending on the solvent used. Assignment of configuration can be achieved by 13C NMR spectroscopy even if only one isomer is available using a strong solvent dependence of the methylene chemical shift in the case of the Z-isomers. This effect is due to the presence of different conformations in the solvents chloroform and dimethyl sulfoxide. Together with a study
Z-α-卤代苯乙酮肟的氨解反应会导致E-和Z-α-氨基苯乙酮肟的混合物不同,具体取决于所使用的溶剂。即使在Z-异构体的情况下,即使仅一种异构体在对亚甲基化学位移的强烈溶剂依赖性下可用,也可以通过13 C NMR光谱法实现构型分配。该效果是由于在溶剂氯仿和二甲基亚砜中存在不同的构型。结合蒸汽渗透压法的研究,结果为氯仿中Z-α-氨基苯乙酮肟的分子内氢键提供了明确的证据。
Nucleophilic Substitution Reactions of Phenacyl Bromide Oxime: Effect of the Solvent and the Basicity of the Nucleophile
作者:Kandatege Wimalasena、Donovan C. Haines
DOI:10.1021/jo00100a062
日期:1994.10
Wimalasena Kandatege, Haines Donovan C., J. Org. Chem, 59 (1994) N 21, S 6472- 6475
作者:Wimalasena Kandatege, Haines Donovan C.
DOI:——
日期:——
MOEHRLE, H.;SCHMIDT, B., ARCH. PHARM., 1982, 315, N 12, 1032-1042