Benzaldehyde → 5,10,15,20-Tetraphenyl-21,22-dihydroporphyrin

Participants

Reaction Steps

In a 4-liter flask equipped with a cooling tube, 80 ml (84.8 g) of benzaldehyde, 56 ml (53.6 g) of pyrrole, and 3 liters of propionic acid were placed and reacted for 30 minutes under reflux. Then, the flask was allowed to stand for one day. After filtering the reaction mixture, recrystallization from a mixed solvent of methanol and chloroform (1:1 by weight) was carried out for purification. Thus, α,β,γ,δ-tetraphenylporphine was obtained in 20% yield.

Provenance & Evidence