Table 3.

Chemical shift values and coupling constants for protons in C-MET compound.

Carbon atom number	1H NMR (δ, ppm)	Signal style	Coupling constant (J, Hz)
11	2.29	Singlet 3H	–
20	3.71	Triplet 2H	5.3
21	4.28	Triplet 2H	5.3
2	6.31	Duplet 1H	16.2
Aromatic ring	7.2–7.3	Multiplet 5H	–
3	7.41	Duplet 1H	16.2
14	7.84	Singlet 1H	–