Deh drogenation of 1,2 ,S-Triphenylpyrrolidine (V) to 1,2,5-&iphenylpyrrole (VI) .-A 0.2-g. sample of the pyrrolidine which had not been separated into its diastereoisomeric components (melting range 127-170 ") wd' heated with a mixture of 0.35 g. of chloranil and 5 ml. of p cymene. The mixture darkened as the temperature was raised. When the boiling point was reached an additional 3 ml. of p-cymene WAS added
