1,8-Naphthalic anhydride
# 1,8-Naphthalic anhydride

1,8-Naphthalic anhydride is an organic compound with the formula $C_{10}H_6(C_2O_3).$ It is one of three isomers of naphthalic anhydride, the other two being the 1,2- and the 2,3-derivatives. The 1,8-isomer is prepared by aerobic oxidation of acenaphthene. 2,6-naphthalenedicarboxylic acid can be prepared from this anhydride. 1,8-Naphthalic anhydride is a precursor to the 4-chloro and 4,5-dichloro derivatives. These chloride groups are susceptible to displacement by amines and alkoxides, giving rise, ultimately, to a large family of naphthalimides, which are used as optical brighteners.

Derivatives include: Alrestatin,...

