Search for "green Hantzsch synthesis" in Full Text gives 2 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2021, 17, 2026–2027, doi:10.3762/bjoc.17.130
Beilstein J. Org. Chem. 2020, 16, 2862–2869, doi:10.3762/bjoc.16.235