Table 1. Electrochemical data measured using cyclic voltammetry (CV) for 3-phenoxymethylmenadione derivatives examined in this work.

^[a]

Cyclic voltammograms of 3-phenoxymethylmenadione representatives, the menadione 2 (black bold line) and its difluoromethyl analogue 8 (red dashed line) were recorded at platinum electrode in CHCl₂ with 0.1 M Tetra-n-butylammonium tetrafluoroborate (Bu₄NBF₄) as supporting electrolyte at 200 mV s⁻¹ scan rate.

	Epc1 (V)	Epa1 (V)	Ipc1/Ipa1	E1½ (V)	ΔEp (mV)	Epc2 (V)	Epa2 (V)	Ipc2/Ipa2	E2½ (V)	ΔEp (mV)	ΔE½ (mV)
1	−0.628	−0.532	1.27	−0.580	96	−1.265	irr	irr	irr	irr	NA
2	−0.620	−0.492	2.29	−0.556	128	−1.154	−1.100	2	−1.127	54	571
5	−0.627	−0.508	1.89	−0.508	119	−1.158	irr	irr	irr	irr	NA
7	−0.620	−0.506	2.92	−0.563	114	−1.132	−1.120	1.75	−1.126	12	563
8	−0.414	−0.244	3.31	−0.329	170	ND	ND	ND	ND	ND	ND
9	−0.326	−0.215	1.67	−0.271	111	ND	ND	ND	ND	ND	ND

^[a]DMSO;I = 0.1 M n-Bu⁴NPF₆, E_½ = (E_pc+E_pa)/2 (V), ΔE = E_pa-E_pc (mV), ΔE_½ = E¹_½-E²_½ (V)). v = 200 mV s⁻¹; reference electrode = KCl(3 M)/Ag/AgCl; working electrode = glassy carbon disk of 0.07 cm² area; auxiliary electrode = Pt wire. ND: no second wave observed, irr: irreversible reduction, NA: not applicable.