天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
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 Methyl 3-hydroxypropanoate
6149-41-3

Methyl 3-hydroxypropanoate synthesis

15synthesis methods
-

Yield:6149-41-3 97%

Reaction Conditions:

with sulfuric acid at 0; for 18 h;

Steps:

52 Preparation of methyl 3-hydroxypropanoate
Oxetan-2-one (22 mL, 350 mmol) was added dropwise to a stirred solution of MeOH (300 mL) and sulfuric acid (5.6 mL, 104 mmol) at 0° C. After 18 h, the reaction was recooled to 10° C., and sodium bicarbonate (18.1 g, 215 mmol) was added portionwise (pH=7 after addition). The resulting suspension was left to stir at r.t. for 30 minutes. The mixture was then filtered, and the filtrate was concentrated under reduced pressure. The resulting residue was diluted with DCM and filtered a second time. The new filtrate was evaporated to dryness to afford methyl 3-hydroxypropanoate (35 g, 97%) as a colorless liquid. 1H NMR (500 MHz, CDCl3, 24° C.) 2.41-2.45 (1H, m), 2.58 (2H, t), 3.72 (3H, s), 3.89 (2H, t).

References:

AstraZeneca AB;Barlaam, Bernard;De Savi, Christopher;Hawkins, Janet;Hird, Alexander;Lamb, Michelle;Pike, Kurt;Vasbinder, Melissa US2016/376287, 2016, A1 Location in patent:Paragraph 1004

FullText

Methyl 3-hydroxypropanoate Related Search: