e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Tetrahedron
Heterodiene syntheses—XXIV: Changes in the reactivity of 2-oxoindolin-3-ylidene derivatives with ethylvinylether induced by electron-withdrawing groups. The …