反应详情

Synthesized according to the methods of general procedure 4 in U.S. Pat. Pub. No. 20090227541 (U.S. patent application Ser. No. 12/142,692) using the following reactants and amounts: 2,3-dihydroxy-4-methyl-benzaldehyde (9 g, 59.21 mmol), (3-bromo-propoxymethyl)-benzene (11.5 mL, 65.13 mmol), sodium tert-butoxide (12.52 g, 130.26 mmol) and DMSO (100 mL). Purification: flash column chromatography (5-10% EtOAc/hexane): yield 15.1 g (85%). 1H NMR (400 MHz, CDCl3) δ (ppm): 11.05 (s, 1H), 9.84 (s, 1H), 7.38-7.26 (m, 5H), 7.20 (d, J=7.8 Hz, 1H), 6.80 (d, J=8.2 Hz, 1H), 4.55 (s, 2H), 4.15 (t, J=6.2 Hz, 2H), 3.73 (t, J=6.2 Hz, 2H), 2.31 (s, 3H), 2.19-2.00 (m, 2H).

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