A Synthetic Approach of New Trans-Substituted Hydroxylporphyrins

Table 1

Redox data of dimethoxy derivatives^(a).

Compound	E1/2ox (V versus SCE)	E1/2red (V versus SCE)
Compound 1	0.96; 1.40	−1.34;−1.68
Compound 2	0.94; 1.36	−1.34;−1.71
Compound 4	0.92; 1.37	−1.33;−1.66

^(a)Redox potentials were determined by cyclic voltammetry at room temperature in dry and deoxygenatrd CH₂Cl₂ containing 0.1 M of tetrabutylammonium hexafluorophosphate as supporting electrolyte and a solute concentration in the range of 1.5×10⁻³M. A Saturated Calomel Electrode (SCE) was used as reference. Under these conditions, the reversible oxidation of ferrocene was E_1/2𝐹𝑐=+0.47V. The error on the reported potentials is ±0.01 V.