一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

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!

55030-26-7

(E)-9-Dodecenoic acid methyl ester synthesis

2synthesis methods
Methyl dodec-9-enoate

39202-17-0
1 suppliers
inquiry

25601-41-6 Synthesis
9-Decenoic acid, methyl ester

25601-41-6
52 suppliers
inquiry

(E)-9-Dodecenoic acid methyl ester

55030-26-7
1 suppliers
inquiry

13481-97-5 Synthesis
9-Octadecenedioic acid, dimethyl ester

13481-97-5
1 suppliers
inquiry

-

Yield:55030-26-7 80 %Chromat.

Reaction Conditions:

with C46H52Br2Cl2N2O3SiW at 20; under 7500.75 Torr; for 2 h;Alkene (Olefin) Metathesis;

Steps:

1.1 Ethenolysis of a mixture of E- and Z-isomers of methyl 9-dodecenoate 1 and 2:

The stock solution of catalyst (prepared according to known methods; TBS = terf.-butyldimethylsilyl) was added to methyl 9-dodecenoate (0.45 ml_, EIZ = 80/20 mixture) and the reaction mixture was pressurized by 10 bar ethylene and stirred at rt for 2 h. Then the pressure was released and MeOH (4.5 ml) was added. An aliquot (200 μΙ_) was taken out and charged onto the top of a silica gel column (0.5 ml silica gel in a 20 ml hypodermic syringe) and the components were eluted with dichloromethane (total DCM used: 25 ml). The eluate was analyzed by gas chromatography. The E-isomer 1 was obtained in a yield of approx. 80 % having a stereoisomeric purity of approx. 96 %. 3 is the ethenolysis product of Z-isomer 2. Compound 4 is formed as a side-product.

References:

WO2018/220088,2018,A1 Location in patent:Paragraph 00119; 00121

龙江县| 都江堰市| 鹰潭市| 辉县市| 夏河县| 西城区| 米林县| 泸溪县| 南木林县| 启东市| 铅山县| 浠水县| 日土县| 镇赉县| 蓬安县| 葵青区| 和田县| 哈尔滨市| 星子县| 江油市| 郧西县| 吉木乃县| 威宁| 葵青区| 喜德县| 武宣县| 龙井市| 温泉县| 浪卡子县| 光泽县| 齐齐哈尔市| 忻城县| 额济纳旗| 黄龙县| 庐江县| 吴忠市| 神农架林区| 贵溪市| 伊宁市| 锦州市| 黄浦区|