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. 2021 Feb 18;26(4):1055. doi: 10.3390/molecules26041055

Scheme 16.

Scheme 16

Synthetic pathway for preparing (55) with reagents and conditions: (a) m-aminobenzoic acid/Bu-OH/conc HCl/reflux/5 h, (b) thionyl chloride/dry benzene/reflux/5 h, (c) aromatic amines/TEA/dry DCM/reflux/5 h.