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
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 Methyl (S)-(-)-lactate
27871-49-4

Methyl (S)-(-)-lactate synthesis

9synthesis methods
-

Yield:27871-49-4 100 %Spectr.

Reaction Conditions:

with dibutylmagnesium in hexane;dichloromethane at 20; for 0.5 h;Schlenk technique;Inert atmosphere;Green chemistry;

Steps:

Ring-opening alcoholysis mediated by Mg(OMe)2 (1) catalyst
General procedure: The monomer, i.e., l-LA(0.72 g, 5 mmol), in CH2Cl2 (10 mL) and MeOH (0.81 mL, 20mmol) were placed in a Schlenk flask and stirred for 10 min, and then MgBu2(0.1 mL of 1.0 M solution in hexane, 0.1 mmol) was added dropwise. Standard molar ratios of reagents: [MgBu2]/[l-LA]/[ROH]= 1/50/200. The reaction mixture was vigorously stirred at room temperature and at certain time intervals aliquots of about 1 mL were taken, quenched with one drop of acetic acid, dried under vacuum, and analyzed using 1H NMR spectroscopy and mass spectrometry.

References:

Bykowski, Dominik;Grala, Agnieszka;Sobota, Piotr [Tetrahedron Letters,2014,vol. 55,# 38,p. 5286 - 5289] Location in patent:supporting information

FullText

Methyl (S)-(-)-lactate Related Search: