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

Table 4

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

Compound	C-1	C-2	C-3	C-4	C-5	C-6	C-7	Ar-C’s	Ipso carbons
1	135.91	124.67	182.81	102.86	182.94	126.38	145.96	130.87–112.97	157.63, 131.82
2	136.52	125.69	183.64	103.97	183.82	127.57	146.82	127.23–115.59	148.86, 144.57
3	136.91	125.81	183.93	104.35	184.12	127.96	147.21	131.09–105.26	165.35, 159.23, 130.58
4	136.26	125.31	183.28	103.76	183.59	127.48	146.38	130.29–108.67	160.28, 157.69, 131.19
5	135.59	124.69	182.76	102.97	182.94	126.25	145.69	130.18–107.52	163.43, 157.82, 134.64