5-Chloroisatoic anhydride → HCID 478573, compound

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Reaction Steps

Using the procedure in Example 12 and substituting isatoic anhydride for 5-chloroisatoic anhydride and 5-nitroisatin for 5-fluoroisatin gave the title compound in 18% yield: mp 302.2°-303° C.; 1H NMR (300 MHz, CDCl3) δ 8.88 (d, 1H) 8.77 (d, 1H) 8.66-8.74 (m, 1H) 8.46-8.52 (m, 1H) 8.09 (d, 1H) 7.88-7.98 (m, 1H) 7.72-7.80 (m, 1H); MS (M+H)+ 293.

Provenance & Evidence