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 3-(1,3-Dioxolan-2-yl)benzonitrile, 97%
153329-04-5

3-(1,3-Dioxolan-2-yl)benzonitrile, 97% synthesis

8synthesis methods
24964-64-5 Synthesis
3-Cyanobenzaldehyde

24964-64-5
339 suppliers
$9.00/1g

-

Yield:153329-04-5 100%

Reaction Conditions:

with p-toluenesulfonic acid monohydrate in ethylene glycol;toluene;

Steps:

R.8 Reference Example 8

Reference Example 8 A mixture of 3-cyanobenzaldehyde (9.81 g), ethylene glycol (9.31 g), p-toluenesulfonic acid monohydrate (0.07 g) and toluene (200 ml) was heated under reflux for 15 hrs., while removing generated water with a Dean-Stark trap. After cooling, the reaction mixture was concentrated, and the residue was diluted with ethyl acetate. This solution was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine; dried over anhydrous magnesium sulfate, and concentrated to give 3-(1,3-dioxolan-2-yl)benzonitrile (13.1 g, yield 100%) as a colorless oil. NMR (CDCl3) δ: 4.01-4.17 (4H, m), 5.83 (1H, s), 4.50 (1H, t, J = 7.6 Hz), 7.63-7.74 (2H, m), 7.80 (1H, t, J = 1.6 Hz).

References:

EP1405636,2004,A1