Chloroindolo[2.1 -b]quinazoline-6.12-dione
Using the procedure in Example 12, and substituting NMP for DMF and isatin for 5-fluoroisatin gave 53 mg (7%) of the title compound: mp 320°C (dec);
lH NMR(DMSO-d6) δ 7.46-7.54 (m, IH), 7.86-7.92 (m, 3H), 8.26-8.28 (m, IH), 8.45-8.50 (m, 2H);
MS (M+H)+ 282.
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