The LiClO4-Mediated Synthesis of β-(Dialkylamino) Sulfoxides and β-(Dialkylamino) Sulfones by Addition of α-Lithiated Salts of Sulfoxides and Sulfones to Aldehydes and (Trimethylsilyl)dialkylamines
摘要:
The LiClO4-mediated one-pot reaction of aldehydes with (trimethylsilyl)dialkyl amines and the lithium salt of sulfoxides or sulfones, affords the corresponding beta-(dialkylamino) sulfoxides and beta-(dialkylamino) sulfones in high yields. The aminosulfoxidation reaction of aliphatic or aromatic aldehydes lacks diastereoselectivity, but the diastereomeric sulfoxides can be separated by HPLC or column chromatography for further use.
Synthesis and conformational analysis of 1-phenyl-2-methylsulfinyl-(and -sulfonyl-) ethylamine (and its -methyl and ,-dimethylderivatives) are reported. Conformational preferences have been determined by carefully observing the changes of the vicinal coupling constants with protonation in the 1H-nmr spectra. The strongly configuration dependent conformational behavior displayed by sulfoxides is explained
The LiClO4-Mediated Synthesis of β-(Dialkylamino) Sulfoxides and β-(Dialkylamino) Sulfones by Addition of α-Lithiated Salts of Sulfoxides and Sulfones to Aldehydes and (Trimethylsilyl)dialkylamines
作者:M. Reza Naimi-Jamal、Junes Ipaktschi、Mohammad R. Saidi
The LiClO4-mediated one-pot reaction of aldehydes with (trimethylsilyl)dialkyl amines and the lithium salt of sulfoxides or sulfones, affords the corresponding beta-(dialkylamino) sulfoxides and beta-(dialkylamino) sulfones in high yields. The aminosulfoxidation reaction of aliphatic or aromatic aldehydes lacks diastereoselectivity, but the diastereomeric sulfoxides can be separated by HPLC or column chromatography for further use.
BRUNET, E.;GALLEGO, M. T.;RUANO, J. L. G.;ALCUDIA, F., TETRAHEDRON, 1986, 42, N 5, 1423-1438
作者:BRUNET, E.、GALLEGO, M. T.、RUANO, J. L. G.、ALCUDIA, F.