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In the compounds, R was hydrogen, 4-chloro, 4-bromo or 4-nitro. For 2,4-dimethoxy-aryl thiazole (right side route) R = Cl for NJ03; R = NO2 for NJ06; R = Br for NJ08 and R = H for NJ12. For 3,4,5-trimethoxy-aryl thiazole (left side route) R = Cl for NJ04; R = NO2 for NJ05; R = Br for NJ07 and R = H for NJ11.
