Hydrochloric Acid → HCID 59838599, compound

To a 100 mL flask containing 10.1 g (0.039 mol) of methyl 2-bromomethyl-3-methoxybenzoate in 50 mL of CH3OH, were added 19 g of a 25% wt. solution of NaOMe (4.74 g, 0.087 mol). The reaction was stirred at room temperature for 2 hours and then evaporated on a rotary evaporator to remove the CH3OH. About 200 mL of water were added to the residue and the resulting solution was extracted with CHCl3. The CHCl3 extract was dried and evaporated to yield 6.27 g of crude methyl 3-methoxy-2-methoxymethylbenzoate (77% yield). 1H NMR (CDCl3, 300 MHz) δ (ppm): 7-7.4 (multiple, 3H), 4.783 (s, 2H), 3.897 (s, 3H), 3.864 (s, 3H), 3.37 (s, 3H). 6.27 g of methyl 3-methoxy-2-methoxymethylbenzoate was stirred with a 20% aqueous KOH solution (6.7 g, 0.12 mol in 34 g of solution) at 50° C. in an oil bath for 4-5 hours, and then at room temperature for 16 hours. The reaction mixture was acidified with 3N HCl to pH 2 and extracted with CH2Cl2. The CH2Cl2 extract was dried and evaporated to yield 5.35 g of 3-methoxy-2-methoxymethylbenzoic acid (92% yield). 1H NMR (CDCl3, 300 MHz) δ (ppm): 7.65 (1H, d), 7.40 (t, 1H), 7.10 (d, 1H), 4.83 (s, 2H), 3.88 (s, 3H), 3.46 (s, 3H).

1. extractionextracted with CH2Cl2
2. extractionThe CH2Cl2 extract
3. customwas dried
4. customevaporated

ORD record

ord-5f32890b8da14f179318f0ab4cbe31c8

Source dataset

uspto-grants-2008_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07456315B2