2-(5-Methoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole → 2-(4,5-Dimethoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole

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2-(4,5-dimethoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole (F9) was prepared in a similar manner for the preparation of 2-(5-methoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole (F8) by using 2-[(4-methoxymethoxybenzylidene)amino]-3-methylphenol (F6) (3.31 g, 10 mmol) instead of 2-[(5-methoxy-2-methoxymethoxybenzylidene)amino]-3-methylphenol (F4) in 62% (2.07 g): 1H-NMR (400 MHz, CDCl3) δ2.66 (s, 3H), 3.58 (s, 3H), 3.95 (s, 3H), 3.97 (s, 3H), 5.28 (s, 2H), 6.84 (s, 1H), 7.12 (d, 1H, J=8.0 Hz), 7.21 (t, 1H, J=8.0 Hz), 7.39 (d, 1H, J=8.0 Hz), 7.63 (s, 1H).

Provenance & Evidence