EICOSAMETHYLCYCLODECASILOXANE synthesis

Yield:18772-36-6 57%

Reaction Conditions:

in diethyl ether;water at 20 - 30;Alkaline conditions;

Steps:

5 Example 5
Intermediate (2) (79.8g, 0.1mol) was dissolved in 50ml of ether, aqueous sodium bicarbonate was added dropwise to a vigorously stirred 5% ofa mixture of diethyl ether solution and, when the exothermic system dropwise, and precipitated solid controlling the temperature at less than 30 degrees, dropwise at roomreaction temperature overnight, GC detecting completion of the reaction, liquid separation, washed with water and brine dried over anhydrous sodium sulfate, distillation to give notransparent liquid dodecamethylcyclohexasiloxane six ring Silicone (D10) (44 g, 57%).

References:

Zhuangming New Materials Science And Technology Jiangsu Co., Ltd.;Wei Juzhi;Yang Shaozu;Wang Huan;Li Changbin CN107200751, 2017, A Location in patent:Paragraph 0008; 0026

FullText