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 1,4-Bis(trans-styryl)benzene
1608-41-9

1,4-Bis(trans-styryl)benzene synthesis

15synthesis methods
-

Yield: 65%

Reaction Conditions:

with C11H20N3(1+)*C2F6NO4S2(1-) at 70; for 7 h;Ionic liquid;Inert atmosphere;Wittig Olefination;

Steps:

2.5.2. Double Wittig
General procedure: An oven-dried reaction tube equipped with a magnetic stirrer barwas charged with a mixture of dialdehyde (1.3 mmol), benzyltriphenylphosphonium bromide (2.2 mmol), [PAIM][NTf2] (4 mmol)and [BMIM][PF6] (7 mL). The reaction mixture was stirred and heatedat 60-70 °C under a nitrogen atmosphere for 7-8 h. After completion(TLC monitoring) the crude reaction mixture was extracted 3 times with hexane/EtOAc (80:20), dried (magnesium sulfate), and the solvent was removed under vacuum to furnish the crude product which was then purified by flash column chromatography with hexane/ethyl acetate (80:20).

References:

Savanur, Hemantkumar M.;Kalkhambkar, Rajesh G.;Laali, Kenneth K. [Applied Catalysis A: General,2017,vol. 543,p. 150 - 161]

1,4-Bis(trans-styryl)benzene Related Search: