Tetrahedron p. 9823 - 9828 (1993)
Update date:2022-08-11
Topics:
Deady, Leslie W.
Desneves, Jose
Ross, Andrew C.
Condensation of substituted o-phenylene diamines and ninhydrins gave the title compounds. The substituent orientation in the products was determined by 1H NMR analysis of the chemical shifts brought about by N5-oxidation. Reduction of the 8-nitro to 8-amino compound was achieved both with and without reduction of the carbonyl group. Nitration of the 8-carboxylic acid occurred in the 2-position.
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