. 2017 May 23;2(5):2238–2247. doi: 10.1021/acsomega.7b00201

PVP–PWA (141)^a.

Reactions were performed with 1:1 quinone/indole, 0.1 g Fe₃O₄/PVP–PWA (141), 20 mol % Ag₂O, 1.5 mmol H₂O₂, and 10 mL of THF at RT for 2–5 h; isolated yield after column chromatography.

Table 6. Substrate Scope for Direct Coupling of Quinones and Indoles Using Ag2O/H2O2 and Fe3O4/PVP–PWA (141)a.

Table 6. Substrate Scope for Direct Coupling of Quinones and Indoles Using Ag₂O/H₂O₂ and Fe₃O₄/PVP–PWA (141)^a.