成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List ethyl salicylate
118-61-6

ethyl salicylate synthesis

14synthesis methods
Ethyl salicylate is found naturally in currants and strawberries . It is manufactured commercially by the esterification of salicylic acid with ethyl alcohol.
-

Yield:118-61-6 97.25%

Reaction Conditions:

with sulfuric acid in water monomer; for 4 h;Reflux;

Steps:

II.B.7.A

To a solution of 2-hydroxybenzoic acid (63) (5.0 g, 36.2 mmol) in anhydrous EtOH (150 ml) was added 98% H2SO4 (4 ml). The mixture was refluxed for 4 h and concentrated. The residue was extracted with CH2Cl2 dried over MgSO4 and evaporated. The crude was purified by distillation to give 68 as colorless liquid. (5.85 g, 35.21 mmol). Yield: 97.25%; MS (EI, 70 eV): m/z 166.2 (M+); 1H-NMR (CDCl3, 200 MHz): δ 1.39 (t, J=7.2 Hz, 3H), 4.37 (q, J=7.2, 7.0 Hz, 2H), 6.81 (t, J=6.6 Hz, 1H), 6.89 (d, J=8.0 Hz, 1H), 7.42 (t, J=7.2 Hz, 1H), 7.82 (dd, J1=8.0, 1.8 Hz, 1H), 10.83 (s, 1H); 13C-NMR (CDCl3, 50 MHz) δ: 170.20, 161.64, 135.56, 129.89, 119.06, 117.53, 61.40, 14.18; Anal. Calcd for C9H10O3: C, 65.05; H, 6.07.

References:

US2012/15908,2012,A1 Location in patent:Page/Page column 24-25

ethyl salicylate Related Search: