21116-64-3

Basic information

• Product Name: 1-(chlorodimethylsilyl)-3-(chlorodiphenylsilyl)-2,2-dimethyl-4,4-diphenylcyclodisilazane
• Synonyms: 1-(chlorodimethylsilyl)-3-(chlorodiphenylsilyl)-2,2-dimethyl-4,4-diphenylcyclodisilazane
• CAS NO: 21116-64-3
• Molecular Weight: 579.823
• Mol File: 21116-64-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1-(chlorodimethylsilyl)-3-(chlorodiphenylsilyl)-2,2-dimethyl-4,4-diphenylcyclodisilazane(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(chlorodimethylsilyl)-3-(chlorodiphenylsilyl)-2,2-dimethyl-4,4-diphenylcyclodisilazane(21116-64-3)
• EPA Substance Registry System: 1-(chlorodimethylsilyl)-3-(chlorodiphenylsilyl)-2,2-dimethyl-4,4-diphenylcyclodisilazane(21116-64-3)

Safety Data

• Hazardous Substances Data: 21116-64-3(Hazardous Substances Data)

Upstream product

• 3449-24-9 1,3-dichloro-1,1,3,3-tetramethyl-disilazane 
• 18737-00-3 1,3-dichloro-1,1,3,3-tetraphenyldisilazane 
• 80-10-4 diphenylsilyl dichloride 
• 2329-10-4 1,3-bis(chlorodimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane 

Downstream Products

• 21116-66-5 1-Diphenylmethylsilyl-3-trimethylsilyl-2,2-diphenyl-4,4-dimethyl-cyclodisilazan 

Relevant articles and documents

Preparation method of cyclodisilazane

The invention relates to a preparation method of a cyclodisilazane compound shown as a formula (I), which comprises the step of preparing cyclodisilazane shown as the formula (I) from a 1, 3-dihalodisilazane compound shown as a formula (II), wherein the formulas are described in the specification. Compared with a traditional high-temperature rearrangement method and a method for preparing 1, 3-bis(chlorodiorganosilyl) cyclodisilazane through high-temperature high-compression polymerization and exchange reaction, the preparation method of cyclodisilazane provided by the invention has the advantages of low reaction temperature, short reaction time, few byproducts, high yield and capability of efficiently preparing cyclodisilazane compounds with different structures; compared with a method of lithiating butyl lithium and then removing lithium chloride to form a reaction ring, the method has the advantages that the reaction can be completed in one step, the process is simple and easy to control, and the cost is low; and moreover, the preparation method is high in safety, easy to control, low in cost, environmentally friendly and beneficial to large-scale production.