• The 3-lithio-derivative (n-BuLi) has been reacted with electrophiles, e.g. allyl bromide, ethylene oxide, etc.: Chem. Ind. (London), 1529 (1963); Indian J. Chem., 7, 536 (1969).
• For Friedel-Crafts acylation at the 6-position, see: Org. Synth. Coll., 6, 34 (1988). For conditions for minimizing the competing 1-acylation, see: Synth. Commun., 20, 383 (1990).