In 1863, French chemists c. friedel and J.M.Crafts started from SiCl4 and ZnEt2 and reacted in a sealed tube at 160℃ to make the first silicone compound with si-c bond SiEt4:

2ZnEt2+SiCl4SiEt4+2ZnCl2

In 1872, A.Ladenburg prepared silane with silicon functional group by reacting ZnEt2 and Si(OEt)3Cl with Na.Two years later, he started from HgPh2 and SiCl4 and obtained PhSiCl3 in sealed tubes.In 1885, A.Polis applied the shrinkage method (Wurtz reaction) to obtain SiPH4 and so on.Until 1903, many chemists devoted their efforts to the birth of organosilicide.It is customary to call this stage the founding period of organosilication.

From 1898 to 1944, The British chemist F.S.Kipping conducted extensive and in-depth research on organosilicide, and published 57 papers successively.One of his outstanding contributions was the use of Grignard reaction in the synthesis of hydrolyzable silanes of different functions, which later became the basis of the silicone industry.The reaction can be indicated as follows:

solvent

3RMgCl+2SiCl4=RSiCl3+R2SiCl2+3MgCl2

During this period, W.Dilthey synthesized organosilicon compounds using the Gliard process almost simultaneously with Kipping.He then hydrolyzed Ph2SiCl2 to Ph2Si(OH)2 and condensed it to get hexaphenyl cyclotrisiloxane (Ph2SiO) 3,

It was the first cyclosiloxane compound and played a good role in promoting the development of polysiloxane.Later called this period of time for silicone growth.