658711-31-0

Basic information

• Product Name: 1,3,5,7-Tetraoxa-2,4,6-trisila-8-boracyclooctane, 8-(4-bromophenyl)-2,2,4,4,6,6-hexamethyl-
• CAS NO: 658711-31-0
• Molecular Formula: C12H22BBrO4Si3
• Molecular Weight: 405.276
• Mol File: 658711-31-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,3,5,7-Tetraoxa-2,4,6-trisila-8-boracyclooctane, 8-(4-bromophenyl)-2,2,4,4,6,6-hexamethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,5,7-Tetraoxa-2,4,6-trisila-8-boracyclooctane, 8-(4-bromophenyl)-2,2,4,4,6,6-hexamethyl-(658711-31-0)
• EPA Substance Registry System: 1,3,5,7-Tetraoxa-2,4,6-trisila-8-boracyclooctane, 8-(4-bromophenyl)-2,2,4,4,6,6-hexamethyl-(658711-31-0)

Safety Data

• Hazardous Substances Data: 658711-31-0(Hazardous Substances Data)

Upstream product

• 3582-71-6 1,5-dichlorohexamethyltrisiloxane 
• 5467-74-3 4-Bromophenylboronic acid 

Relevant articles and documents

Synthesis and characterisation of cyclo-boratetrasiloxane, (RBO)(Me 2SiO)3 (R=nBu, Ar), derivatives

Low temperature reactions of dilute solutions of 1,5-dichloro-1,1,3,3,5,5- hexamethyltrisiloxane with boronic acids {RB(OH)2; R=nBu, C6H4Me-2, C6H4Me-3, C 6H4Me-4, C6H4OMe-3, C 6H4OMe-4, C6H4Br-2, C 6H4Br-3, C6H4Br-4} in the presence of a twofold excess of Et3N afforded the 8-membered ring products, cyclo-boratetrasiloxanes, (RBO)(Me2SiO)3, in moderate yields. New compounds were colourless oils and were characterised by elemental analysis, NMR (1H, 11B, 13C, 29Si), IR and MS. The cyclo-boratetrasiloxanes are weakly Lewis acidic, with acceptor number (AN) values of ～30, but do not form adducts with amines.