Reactions of sulfoxonium allylides with nitrile oxides and ring transformations of their reaction products
作者:Y. Nakada、T. Hata、C. Tamura、T. Iwaoka、M. Kondo、J. Ide
DOI:10.1016/0040-4039(81)80129-3
日期:1981.1
Reactions of allylides () with nitrileoxides () afforded furanylglyoxylate oxime () and 6H-l,2-oxazine (). Ringtransformations of and gave and pyrrolinone (), respectively.
substituted arenes using vinylsulfoxoniumylides and ynones. The addition of ynone at the γ-position of vinylsulfoxoniumylides leads to dienyl sulfoxoniumylide that can undergo selective annulation under different conditions to give m-terphenyls and parabens. Moreover, control experiments and quantum chemical calculations reveal two distinct reaction mechanisms for both annulations.
stereoselective cyclopropanation of vinyl sulfoxoniumylides with indane 1,3-dione and aldehydes under mild reaction conditions. In contrast to previous reports, the present work shows that electrophilic addition selectively takes place at the α-position of the vinyl sulfoxoniumylide. The interesting feature of this approach is that the multicomponent reaction selectively proceeds because of the difference