For 10 points, name this doubly-eponymous reaction in which an arene is formylated using phosphorus oxychloride in dimethylformamide.
An azide-nitrile coupling using a variation of this reaction generates an organocatalyst in situ from NMP and was developed by Kappe and Cantillo. Ushijima's modification of this reaction performs a workup using idoine in ammonia to synthesize nitriles. This reaction performs the same chemical transformation as the hexamine-using Sommolet reaction and the Reimar-Tiemann reaction. This reaction only works on electron-rich reactants, and for anthracene, it gives exclusive addition to the 9-position. This reaction's namesake reagent is generated in situ and consists of an (*) iminium ion single bonded to a chlorine atom, and that is generated after a lone pair on a carbonyl group attacks an electron-poor phosphorous center. For 10 points, name this doubly-eponymous reaction in which an arene is formylated using phosphorus oxychloride in dimethylformamide.
An azide-nitrile coupling using a variation of this reaction generates an organocatalyst in situ from NMP and was developed by Kappe and Cantillo.
Vilsmeier-Haack Reaction