A Simple Route to N,N,N′,N′-Tetrasubstituted 3-Aminothioacrylamides and 3-Aminoselenoacrylamides
作者:Horst Hartmann、Cornelia Heyde、Ines Zug
DOI:10.1055/s-2000-6277
日期:——
In the reaction of N,N-disubstituted 3-amino-3-chloropropenylidenedimethyliminium salts 2 with sodium sulfide or sodium selenide, a simple route for preparing N,N-disubstituted 3-aminothioacryldimethylamides 3 and N,N-disubstituted 3-aminoselenoacryldimethylamides 4, respectively, was elaborated.
The Interplay of Thio(seleno)amide/Vinylogous Thio(seleno)amide “Resonance” and the Anisotropic Effect of Thiocarbonyl and Selenocarbonyl Functional Groups
spectra assigned. Both the NMR data and the results of theoretical calculations at the abinitio level of theory were employed to elucidate the adopted structures of the compounds in terms of E/Z isomerism and s-cis/s-trans configuration. In the case of the asymmetrically N(Me)Ph-substituted compounds, abinitio GIAO-calculated ringcurrent effects of the N-phenyl group were applied to successfully determine