2-(2-cyano-4-Methoxyphenyl)acetic acid synthesis
- Product Name:2-(2-cyano-4-Methoxyphenyl)acetic acid
- CAS Number:52786-67-1
- Molecular formula:C10H9NO3
- Molecular Weight:191.18
1261620-25-0
2 suppliers
inquiry
52786-67-1
35 suppliers
inquiry
Yield:52786-67-1 77%
Reaction Conditions:
Stage #1: (2-bromo-4-methoxy-phenyl)-acetic acidwith lithium hydroxide monohydrate;water in tetrahydrofuran at 55;
Stage #2: with water;sodium hydroxide pH=14;
Stage #3: with hydrogenchloride in water;ethyl acetate; pH=2 - 3;
Steps:
The (2-cyano-4-methoxy-phenyl)-acetic acid methyl ester (120 mg, 0.585 mmol) was dissolved in 10 mL THF and 2 mL water and LiOH monohydrate (101 mg, 2.34 mmol) was added. The mixture was heated at 55° C. overnight. The mixture was cooled to room temperature and the solvent was removed in vacuo. The residue was dissolved in 30 mL water and adjusted to pH 14 with aqueous 1N NaOH. The aqueous layer was washed with 50 mL of ethyl acetate. The organic extract was discarded and the aqueous phase was treated with 1N HCl (aq.) to pH2-3. The aqueous solution was washed with 75 mL ethyl acetate and the organic solution was dried (MgSO4), filtered and concentrated to give 86 mg (77%) of the title compound (SM-1ah) as a yellow solid. MS (ES+) 192.2 (M+H)+ 1H NMR (CDCl3) δ 3.81 (s, 3H), 3.84 (s, 2H), 7.09 (dd, 1H), 7.13 (d, 1H), 7.30 (d, 1H), 10.22 (br s, 1H).
References:
US2011/230461,2011,A1 Location in patent:Page/Page column 31
66916-99-2
132 suppliers
$11.00/1g
52786-67-1
35 suppliers
inquiry
198630-93-2
7 suppliers
inquiry
52786-67-1
35 suppliers
inquiry