Methyl salicylate synthesis
- Product Name:Methyl salicylate
- CAS Number:119-36-8
- Molecular formula:C8H8O3
- Molecular Weight:152.15
Yield:119-36-8 98%
Reaction Conditions:
with sulfuric acid for 20 h;Reflux;
Steps:
2.1
H2SO4 (4.0 mL, 74.63 mmol) was added to a solution of salicylic acid (5.0 g, 36.20 mmol) in MeOH (60 mL). The reaction mixture was refluxed for 20 h, allowed to reach r.t., poured into H2O (100 mL) and extracted with CH2Cl2 (120 mL). The organic layer was dried over Na2SO4 (anhydrous), filtered and concentrated. The crude residue was flash chromatographed on SiO2 (5% EtOAc/hexanes) to furnish 5.44 g of methyl 2-hydroxybenzoate (colourless oil, yield: 98%).1H NMR (CDCl3, 250 MHz) δ ppm: 10.75 (s, 1H), 7.84 (dt, J1=6.6 Hz, J2=8.2 Hz, 1H), 7.45 (m, 1H), 6.98 (d, J=8.2 Hz, 1H), 6.87 (m, 1H), 3.95 (s, 3H).
References:
US2012/149769,2012,A1 Location in patent:Page/Page column 21-22
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