HCID 178450622, compound → 21H,22H-Porphine

Participants

Reaction Conditions

Reaction Steps

A solution of porphyrin 40 (355 mg, 0.50 mmol) and MnCl2 (318 mg, 2.53 mmol) in anhydrous DMF (50 mL) was magnetically stirred and heated to 145° C. for 1 h then exposed to a stream of air for 2 h. The reaction mixture was cooled to room temperature overnight under a stream of air. Evaporation of DMF provided a crude solid mixture which was adsorbed onto silica gel (2 g). Purification by column chromatography (gradient elution with 0-5% MeOH/CH2Cl2) provided porphyrins 41 (170 mg) and 42 (10 mg) as solids. For porphyrin 41: mp 200-210° C.; UV-vis λmax=456.0 nm, ε=1.4×105 L/cm-mol; FAB MS m/z=763 [C40H44MnN4O8]+. For porphyrin 42: mp 200-205° C.; UV-vis λmax=459.5 nm, ε=7.2×104 L/cm-mol; FAB MS m/z=707, [C36H36MnN4O8]+.

Provenance & Evidence