SYNTHESIS OF BENZO[b]FURAN
3395
(dd, J ¼ 0.6, 1.5 Hz, 1H), 8.09 (dd, J ¼ 1.8, 8.7 Hz, 1H), 7.71 (d, J ¼ 8.7 Hz, 1H), 7.61
(d, J ¼ 0.9 Hz, 1H).
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