Bis(2-bromoethyl) ether → 8-(2-(2-Bromoethoxy)ethoxy)-4-(3,5-dichloropyridin-4-ylamino)-7-methoxy-2H-chromen-2-one

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The title compound was prepared from 2-bromoethyl ether and 4-(3,5-dichloropyridin-4-ylamino)-8-hydroxy-7-methoxy-2H-chromen-2-one (Example 29) following the procedure outlined in Example 25. 1H NMR (400 MHz, DMSO-d6): δ 9.51 (s, 1H), 8.81 (s, 2H), 7.94 (d, 1H), 7.20 (d, 1H), 4.64 (s, 1H), 4.13 (m, 2H), 3.93 (s, 3H), 3.80-3.74 (m, 4H), 3.55 (t, 2H); MS (ESI): 502.7.

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