66390-58-7

Upstream product

• 3282-30-2 pivaloyl chloride 
• 2633-66-1 2-mesitylmagnesium bromide 
• 2700-84-7 2,2-dimethyl-1-(2,4,6-trimethylphenyl)propan-1-one 

Downstream Products

• 2700-84-7 2,2-dimethyl-1-(2,4,6-trimethylphenyl)propan-1-one 
• 33770-82-0 1-(2,2-Dimethylpropyl)-2,4,6-trimethylbenzol 
• 86439-90-9 Essigsaeure-2,2-dimethyl-1-(2,4,6-trimethylphenyl)propylester 
• 345945-16-6 meso-2,2,5,5-Tetramethyl-3,4-bis(2,4,6-trimethylphenyl)hexan 
• 86439-87-4 DL-2,2,5,5-Tetramethyl-3,4-bis(2,4,6-trimethylphenyl)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.