The synthesis of the previously unknown 3,4-diaminonaphthalene-1,8-dicarboxylic anhydride (7) is reported. Support for the structural assignment is found in an alternate synthetic route to the dialkyl esters (16) and (17). All new compounds are characterized by elemental analysis and i.r. and n.m.r. spectroscopy.
L. A. Jones, H. K. Kim and R. Watson, J. Chem. Soc. C, 1971, 3891 DOI: 10.1039/J39710003891
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