1625-89-4

Basic information

• Product Name: Silane, [1,1'-biphenyl]-4,4'-diylbis[trimethyl-
• CAS NO: 1625-89-4
• Molecular Formula: C18H26Si2
• Molecular Weight: 298.575
• Mol File: 1625-89-4.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Silane, [1,1'-biphenyl]-4,4'-diylbis[trimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Silane, [1,1'-biphenyl]-4,4'-diylbis[trimethyl-(1625-89-4)
• EPA Substance Registry System: Silane, [1,1'-biphenyl]-4,4'-diylbis[trimethyl-(1625-89-4)

Safety Data

• Hazardous Substances Data: 1625-89-4(Hazardous Substances Data)

Upstream product

• 6999-03-7 1-bromo-4-(trimethylsilyl)benzene 
• 127321-09-9 1-n-butyl-3-iodobicyclo<1.1.1>pentane 

Downstream Products

• 38215-38-2 4,4'-diethynylbiphenyl 
• 23038-40-6 Phenyl-<4'-trimethyl-silyl-biphenylyl-(4)->-sulfon 
• 398-23-2 4,4'-difluorobiphenyl 

Relevant articles and documents

Nickel- and palladium-catalyzed cross-coupling reactions at the bridgehead of bicyclo[1.1.1]pentane derivatives - A convenient access to liquid crystalline compounds containing bicyclo[1.1.1]pentane moieties

Radical addition reactions of organyl iodides 7a-s onto [1.1.1]propellane (2) followed by halogen-lithium exchange and transmetallation with zinc chloride, as well as additions of Grignard reagents to 2, have furnished a variety of 3-substituted bicyclo[1.1.1]pentyl-1-magnesium (14) and -zinc (19) derivatives. The latter have been coupled with various alkenyl, aryl, and biaryl halides and triflates under NiCl2dppe, Pd(PPh3)4, or PdCl2(dppf) catalysis to give a number of 1,3-disubstituted bicyclo[1.1.1]pentyl derivatives 17, 20, and 23, several of which exhibit liquid crystalline properties, in moderate to very good yields. The coupling products 20ca, 23ab, 23ae, 23ff, and 23fg have been further transformed to yield bicyclo[1.1.1]pentyl derivatives 32, 24ab, 24ae, 27ff, and 27fg, respectively, bearing alkynyl, cyano, and/or alkenyl groups.