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Beilstein J. Org. Chem. 2021, 17, 805–812, doi:10.3762/bjoc.17.69
Graphical Abstract
Figure 1: Generation of the six-membered byproduct A from thionation reactions using Lawesson’s reagent.
Figure 2: Work-up procedure for the reaction with LR.
Figure 3: Modified process for the synthesis of 2e via phase separation.
Scheme 1: Modified process for the synthesis of pincer ligand 4.
Scheme 2: Modified process for the synthesis of pincer-type ligand 6.