117713-24-3

Basic information

• Product Name: C₂₉H₂₈
• CAS NO: 117713-24-3
• Molecular Weight: 376.541
• Mol File: 117713-24-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₂₉H₂₈(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₉H₂₈(117713-24-3)
• EPA Substance Registry System: C₂₉H₂₈(117713-24-3)

Safety Data

• Hazardous Substances Data: 117713-24-3(Hazardous Substances Data)

Upstream product

• 75-09-2 dichloromethane 
• 613-33-2 (4,4'-dimethyl-1,1'-biphenyl) 

Relevant articles and documents

Preperations and Reactions of Symmetrical Dimethylenebiphenyl Dianions; Conformations of -o-Cyclophanes. A Simple NMR method for Determining Twist Angles in Biphenyls

With n-butyllithium / potassium tert-butoxide, a proton is removed from each methyl group of the symmetrical dimethylbiphenyls to give dianions in good yield.The reactions of these dianions with alkyl halides, dialkyl sulfates, trimethylchlorosilane, trimethylchlorogermane, α,ω-dihalides, and oxidizing agents were found to provide the best routes to many symmetrically substituted biphenyls, including - and cyclophanes.NMR and molecular mechanical studies of some of these cyclophanes gave information on their preferred conformations.An NMR method for determining the angle of twist in biphenyls from the chemical shifts of the ortho hydrogens is developed.