Search for "Mannich cyclization" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2023, 19, 1234–1242, doi:10.3762/bjoc.19.91
Beilstein J. Org. Chem. 2023, 19, 593–634, doi:10.3762/bjoc.19.44
Beilstein J. Org. Chem. 2021, 17, 28–41, doi:10.3762/bjoc.17.4
Beilstein J. Org. Chem. 2018, 14, 2340–2347, doi:10.3762/bjoc.14.209