成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

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 Cyclohexanecarboxaldehyde
2043-61-0

Cyclohexanecarboxaldehyde synthesis

13synthesis methods
The prepared Grignard reagent was pressed into a dry and clean 20 L reaction bottle, the temperature of the Grignard reagent was cooled to -20° C. and controled at -10±5° C. then 1.506 g of dimethylformamide was dropwise added to the reaction bottle in about 2 h, the temperature of the system was preserved at a temperature below 0° C. for 2 h. 7 L of HCl having a concentration of 4 mol/L was dropwise added to the reaction bottle to terminate the reaction to obtain a reaction product. Suction filtration was performed for the reaction product, an obtained filtrate was standed to enable liquid separation, an obtained water phase was extracted twice with 2.8 L of EA, extracted organic phases were combined and washed with 3 L of saturated salt water, and concentration was performed to obtain 1.608 kg of Cyclohexanecarboxaldehyde having a purity of 96% and a yield of 83%.
-

Yield:2043-61-0 99.5%

Reaction Conditions:

with hydrogen in lithium hydroxide monohydrate at 100; under 15001.5 Torr; for 12 h;Autoclave;Green chemistry;

Steps:

Catalytic tests

General procedure: As a typical prodecure, Rh-based catalyst (0.1mol%), olefin (3mmol), and solvent (10mL) were added into a stainless steel autoclave (100mL) with a magnetic stir bar. After sealing and purging with syngas (CO/H2=1:1) for 3 times, the pressure of syngas was adjusted to the desired value and the autoclave was put into a preheated oil bath and stirred with a speed of 1000rpm. After the reaction, the catalysts were taken out from the system by centrifugation and analyzed by gas chromatography equipped with a flame ionization detector and a Supelco γ-DEX 225 capillary column.

References:

Tang, Yongquan;Dong, Ke;Wang, Sai;Sun, Qi;Meng, Xiangju;Xiao, Feng-Shou [Molecular catalysis,2019,vol. 474,art. no. 110408]

Cyclohexanecarboxaldehyde Related Search: