Search for "3,3'-disubstituted oxindoles" in Full Text gives 7 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2023, 19, 1785–1803, doi:10.3762/bjoc.19.131
Beilstein J. Org. Chem. 2022, 18, 303–308, doi:10.3762/bjoc.18.34
Beilstein J. Org. Chem. 2016, 12, 1551–1556, doi:10.3762/bjoc.12.149
Beilstein J. Org. Chem. 2016, 12, 1000–1039, doi:10.3762/bjoc.12.98
Beilstein J. Org. Chem. 2016, 12, 505–523, doi:10.3762/bjoc.12.50
Beilstein J. Org. Chem. 2014, 10, 929–935, doi:10.3762/bjoc.10.91
Beilstein J. Org. Chem. 2012, 8, 1360–1365, doi:10.3762/bjoc.8.157