Methyl 3-phenanthryl ketone → 3-Phenanthrenecarboxylic acid

Participants

Reaction Steps

Using the procedure outlined in 2A for 2-acetylphenanthrene, 3-acetylphenanthrene (Aldrich, technical grade), 25 g, 0.114 mol) gave 13 g (51%) of phenanthrene-3-carboxylic acid. 15.6 (0.07 mol) of this acid was converted to the corresponding acid chloride, then to 8.37 g (58%) of phenanthrene-3-carboxaldehyde mp 78°-80° (lit. 79.5°-80°, E. Mosettig and J. van de Kamp, J. Amer. Chem. Soc. 55 2395 (1933)), (C,H).

Provenance & Evidence