29492-96-4

Basic information

• Product Name: 4,5-Diphenyl-2,2,7,7-tetramethyloctane
• Synonyms: 1,1'-[1,2-Bis(2,2-dimethylpropyl)-1,2-ethanediyl]bisbenzene;2,2,7,7-Tetramethyl-4,5-diphenyloctane;4,5-Diphenyl-2,2,7,7-tetramethyloctane;α,β-Dineopentylbibenzyl
• CAS NO: 29492-96-4
• Molecular Formula: C₂₄H₃₄
• Molecular Weight: 0
• Mol File: 29492-96-4.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4,5-Diphenyl-2,2,7,7-tetramethyloctane(CAS DataBase Reference)
• NIST Chemistry Reference: 4,5-Diphenyl-2,2,7,7-tetramethyloctane(29492-96-4)
• EPA Substance Registry System: 4,5-Diphenyl-2,2,7,7-tetramethyloctane(29492-96-4)

Safety Data

• Hazardous Substances Data: 29492-96-4(Hazardous Substances Data)

Upstream product

• 100-42-5 styrene 
• 507-19-7 t-butyl bromide 
• 2259-30-5 tert-butylmagnesium bromide 

Downstream Products

• 83958-00-3 meso-4,5-Dicyclohexyl-2,2,7,7-tetramethyloctan 

Relevant articles and documents

Titanocene-Catalyzed Alkylation of Aryl-Substituted Alkenes with Alkyl Halides

A new method for substitution of a vinylic hydrogen with an alkyl group (a Mizoroki-Heck type transformation) was developed by a titanocene catalyst in the presence of nBuMgCl. This reaction could proceed regio- and stereoselectively under mild conditions to afford E-olefins using primary and secondary alkyl halides. The reactions of aliphatic alkenes, e.g., 1-octene and internal alkenes, were sluggish. When t-alkyl halides were employed, alkylative dimerization of alkenes proceeded exclusively to give symmetrical vic-diarylalkanes. These reactions involved addition of alkyl radicals to arylalkenes to form benzyl radicals as a carbon-carbon bond-forming step. Dimerization of thus formed benzyl radicals afforded symmetrical alkanes and β-hydrogen elimination from benzyltitanocene intermediates gave alkylated alkenes. A possibility that titanocene activates alkenes as radical accepters was also proposed.