反应详情

3-Chloro-4,5-bis(cyclopentyloxy)benzoic acid (5) (380 mg, 99%) was prepared from methyl 3-chloro-4,5-bis(cyclopentyloxy)benzoate (4) (400 mg, 1.18 mmol) using a procedure essentially the same as in Step (ii) for AAA-001, except that 1,4-dioxane (10 mL) was used instead of THF: m/z 323 [M−H]− (ES−); 1H NMR (400 MHz, DMSO-d6) δ: 13.07 (1H, br s), 7.52 (1H, d), 7.45 (1H, d), 4.97-4.91 (2H, m), 1.99-1.90 (2H, m), 1.70-1.57 (14H, m).