Tetrahedron letters

EDC-mediated condensations of 1-chloro-5-hydrazino-9, 10-anthracenedione, 1-hydrazino-9, 10-anthracenedione, and the corresponding anthrapyrazoles

MK Kim, DF Wiemer

Index: Kim, MeeKyoung; Wiemer, David F. Tetrahedron Letters, 2004 , vol. 45, # 25 p. 4977 - 4980

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Citation Number: 10

Abstract

The EDC-mediated condensation of 1-chloro-5-hydrazino-9, 10-anthracenedione afforded an N-1 acyl anthrapyrazole instead of the expected hydrazide. The regiochemistry of the N- acyl substituent was assigned on the basis of an extensive set of NMR experiments, and