Search for "ortho-effect" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2023, 19, 1171–1190, doi:10.3762/bjoc.19.86
Beilstein J. Org. Chem. 2018, 14, 1491–1497, doi:10.3762/bjoc.14.126
Beilstein J. Org. Chem. 2009, 5, No. 31, doi:10.3762/bjoc.5.31