SYNTHESIS OF 2-CYANO-3-DIMETHYLAMINO-N-PHENYLACRYLAMIDES USING THE VILSMEER REACTION

Vilsmeier–Haack reagent mediated synthetic transformations with an immobilized iridium complex photoredox catalyst

The synthesis of amides, nitriles, and anhydrides via reactions under the action of the visible-light-driven in situ generated Vilsmeier–Haack reagent from CBr₄ in DMF.

[Efficient construction of nitrogen-containing heterocycles utilizing CN functional groups and its application to the synthesis of natural products]

Viridicatin derivatives were synthesized from cyanoacetanilides utilizing the CN groups as electron-withdrawing groups and leaving groups. Also, the key scaffolds of glycocitlones were constructed via the intramolecular Houben-Hoesch-type reactions of cyanoacetanilides where the CN groups functioned as electrophiles. It was found that Houben-Hoesch-type reactions of cyanoacetanilides were promoted by α-functionalization such as perfluoroacylation and N,N-dimethylaminomethylenation and that introduction of such substituents at α-position with respect to the CN groups greatly influenced the physical properties and chemical reactivity of the CN groups.