5-Bromo-1-benzothiophene → 1-(5-Bromobenzo[b]thiophen-3-yl)ethanone

Beteiligte Stoffe

Reaktionsschritte

Prepared in 70% yield from 5-bromo-benzothiophene (See Ple, P. A.; Marnett, L. J. J. Heterocycl. Chem., vol. 25, pp. 1271-1272 (1988), incorporated herein by references), analogous to the procedure for the preparation of 3-acetyl-7-bromo-benzo[b]thiophene. 1H NMR (300 MHz, CDCl3) δ8.04 (d, H. J=1.8Hz), 7.86 (s, 1H), 7.74 (d, 1H, J=8.4Hz), 7.56 (dd, 1H, J=8.4, 1.8Hz), 2.67 (s, 3H). Anal. (C10H7BrOS) C, H, Br, S. Calculated C=47.07, H=2.77, Br=31.32, S=12.57; found C=47.18, H=2.76, Br=31.42, S=12.55.

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