反应详情

A solution of methyl 3-chloro-4-(propyloxy)benzoate (D99) (12.22 g, 0.053 mol) in ethanol (40 ml) and 2M NaOH aq. (40 ml) was heated at 60° C. for 3 hours. The reaction was allowed to cool and then left at room temperature over the weekend. The reaction mixture was poured into a mixture of dilute aq. HCl and EtOAc. The organic layer was separated, dried and evaporated to give a solid which was triturated with ether to give the title compound as a white solid (7.7 g). δH (400 MHz, d6-DMSO) 1.00 (3H, t), 1.67-1.87 (2H, m) 4.10 (2H, t), 7.24 (1H, d), 7.84-8.06 (2H, m), 12.97 (1H, br s). MS (ES) C10H1135ClO3 requires 214; found 213 (M−H+).

1. temperatureto cool
2. waitleft at room temperature over the weekend
3. customThe organic layer was separated
4. customdried
5. customevaporated
6. customto give a solid which
7. customwas triturated with ether