A three-component electrophilicreaction transforms olefins into imidazoline and diamine derivatives. Rhodium(II) heptafluorobutyrate dimer (2 mol %) was utilized as the catalyst and N,N-dichloro-p-toluenesulfonamide (TsNCl2 ) and acetonitrile as the nitrogen sources. Modest to good yields (45-82 %) and high regio- and stereoselectivity were achieved.
Direct Electrophilic Diamination of Functionalized Alkenes without the Use of Any Metal Catalysts
作者:Dianjun Chen、Cody Timmons、Han-Xun Wei、Guigen Li
DOI:10.1021/jo030098a
日期:2003.7.1
A new direct electrophilic diamination reaction of alpha,beta-unsaturated ketones and esters has been established without the use of any metal catalysts. Three types of nitriles (CH3CN, CH3CH2CN, and CH3CH2CH2CN) were employed as nucleophilic nitrogen sources. A new mechanism has also been proposed to explain the resulting regio- and stereoselectivity.