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23.10.6.1 Synthesis of Product Subclass 6

DOI: 10.1055/sos-SD-023-00342

Kollenz, G.Science of Synthesis, (200623372.

N-Unsubstituted 6-(oxomethylene)cyclohexa-2,4-dien-1-imines can be generated from thermal reactions of several precursors (e.g., benzotriazoles,[‌53‌,‌54‌] isatoic anhydride, or derivatives of anthranilic acid[‌55‌‌60‌]) and are highly reactive intermediates that are trapped by cycloaddition reactions, in particular across C=N bonds, or cyclocondensation reactions with amides. However, in no case is any significant evidence for the transient existence of these specific imidoylketenes given. Also, there are alternative routes proposed to explain the experimental outcome of these reactions.[‌53‌‌60‌]

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