343844-08-6

Upstream product

• 68525-41-7 DL-3,4-Bis(4-chlorphenyl)-2,2,5,5-tetramethylhexan 
• 104-88-1 4-chlorobenzaldehyde 
• 68525-44-0 Bis<1-(4-chlorphenyl)-2,2-dimethylpropyl>diazen 
• 6200-21-1 (+/-)-2,2-dimethyl-1-(p-chlorophenyl)propan-1-ol 

Downstream Products

• 26110-93-0 1-Chlor-4-(2,2-dimethylpropyl)benzol 
• 5121-74-4 4,4'-dichlorostylbene 
• 68525-41-7 DL-3,4-Bis(4-chlorphenyl)-2,2,5,5-tetramethylhexan 
• 68525-43-9 C₁₁H₁₄Cl 
• 27561-34-8 meso-3,4-Diphenyl-2,2,5,5-tetramethyl-hexan 

Relevant academic research and scientific papers

Thermolabile Hydrocarbons, XVIII. 1-Substituted Neopentyl radicals and their Dimers

Five 3,4-diaryl-2,2,5,5-tetramethylhexanes 1a - e were prepared as pure meso- and DL-isomers.According to the NMR spectra, x-ray analyses for meso- and DL-1e (with an (FB)2E conformation as energy minimum for DL-1e), and force field calculations the diastereomers have distinctly different minimum energy conformations, rotational potentials, and strain enthalpies.Also the activation parameters for the thermal dissociation into 1-arylneopentyl radicals 2 are typically differing.From an entropy discussion it is concluded that sandwich-like diastereomeric radical complexes are formed in these reactions as first intermediates.Their tightness influences ΔS%.The recombinations of the radicals 2 likewise take place stereoselectively.Their substituent effects on the selectivity can also be understood by primary formation of diastereomeric complexes of radical pairs.