An Efficient Green Procedure for Synthesis of Some Fluorinated Curcumin Analogues Catalyzed by Calcium Oxide under Microwave Irradiation and Its Antibacterial Evaluation

Table 3

Proton NMR chemical shift (𝛿, ppm) data of curcumin analogues 1–5.

Compound	H-1  (d)	H-2  (d)	OH-3  (s)	H-4  (s)	H-6  (d)	H-7  (d)	Ar-H’s  (m)
1	6.38	6.54	10.52	5.21	7.60	7.75	7.45–6.90
2	6.35	6.52	10.46	5.15	7.58	7.74	7.29–6.81
3	6.34	6.51	10.42	5.17	7.59	7.74	7.26–6.79
4	6.35	6.54	10.48	5.16	7.61	7.76	7.28–6.81
5	6.37	6.53	10.47	5.15	7.59	7.75	7.30–6.79