27561-34-8

Upstream product

• 1688-17-1 1-chloro-2,2-dimethyl-1-phenylpropane 
• 343844-08-6 meso-3,4-Bis(4-chlorphenyl)-2,2,5,5-tetramethylhexan 
• 60-29-7 diethyl ether 
• 70712-85-5 1-phenyl-2,2-dimethyl-1-propyl bromide 
• 23587-78-2 trimethyl-(2,2-dimethyl-1-phenylpropoxy)silane 
• 108660-53-3 (Z)-2,2,5,5-Tetramethyl-3,4-diphenylhex-3-ene 
• 76951-60-5 (E)-1,2-di(tert-butyl)-1,2-diphenylethene 
• 55043-60-2 Bis(2,2-dimethyl-1-phenylpropyl)diazen 

Downstream Products

• 1007-26-7 (2,2-dimethyl-1-propyl)benzene 
• 62678-54-0 meso-3,4-Di(1-cyclohexen-1-yl)-2,2,5,5-tetramethylhexan 

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.

ZUR PHOTOCHEMISCHEN ENTHALOGENIERUNG VON ARYLCHLORIDEN

253.7 nm irradiation of meso-3 and DL-3 in decane or isooctane yielded meso-4 and DL-4 respectively in contrast to the thermolysis reaction of 3. p-Chloro-toluene, p-chloro-t-butylbenzene and p-chloro-fluorobenzene are similarly reduced in 70-90 percent yield.