Di-tert-butyl ketone

In radical reactions not involving bromine or chlorine on the substrate, rearrangements are much rarer One example is the fluorination of di-tert butyl ketone which produces perfluormated / rt-buty isobutyl ketone [J5] Although isolated yields are poor only the rearranged ketone could be isolated This is perhaps only the second example of a 1,2-acyl shift Low fluorine substrate ratios show that this rearrangement occurs after monofluorination... 

I) Acetaldehyde, Acetone, Di-tert-butyl ketone. Methyl tert-butyl ketone (reactivity towards HCN)... 

C9H18 1,cls-2-dimethyl-trans-3-ethylcyclopentane. .. 15.750 161.023 1,2 18000 C9H180 di-tert-butyl ketone 815-24-7 14.683 173.786 1.2... 

The Norrish type I reaction of acyclic and cyclic ketones in solution typically results in recombination, decarbonylation and disproportionation (hydrogen abstraction) products.903 For example, irradiation of di-tert-butyl ketone (265) in hexane solution provides nearly exclusively decarbonylation products from both the singlet and triplet states (>90% chemical yield), whereas the carbonyl group-containing products are produced only in traces (Scheme 6.111).922 923... 

Lipshutz and coworkers have developed copper hydride complexes with diphosphine ligands that catalyze the asymmetric hydrosilylation of aryl ketones at low temperatures (-50 to -78 °C) [68]. Nolan and coworkers discovered that copper complexes with NHC ligands are very efficient catalysts for the hydrosilylation of ketones, including hindered ketones such as di-cyclohexyl ketone and di-tert-butyl ketone [69]. 

Lithium tetrahydridoaluminate di-tert-butyl ketone Sec. alcohols from ketones Stereospecific reduction... 

Aluminum chloride s. under Li[AlHJ Di-tert-butyl ketone s. under Li[AlHJ... 

The involvement of carbenoid species in the McMurry reaction of sterically hindered ketones was further demonstrated by analysis of the products resulting from the reduction of di-tert-butyl ketone with the MCl4-Li(Hg) systems (Scheme 6.15) [280, 281], In this case, H migration within the [M]=CtBu2 species gave the ex-... 

Aliphatic ketones Di-tert-butyl ketone t-BuCO-t-Bu 31.32 0.41 [5]... 

Thus -z /f°(3.10) = 37.68 kJ mor when gaseous BF3 is complexed with bulk nitrobenzene. Since bulk nitrobenzene plays the role of solute and solvent. Equation 3.9 can be used to calculate a BF3 affinity of nitrobenzene in CH2CI2 of 35.79 kJ mor. A series of experiments carried out on bulk nitromethane gave -AH° 3.10) = 39.60 kJmor. Assuming that bulk nitromethane may be considered (in this context) as nitromethane dissolved in nitrobenzene, a BF3 affinity of nitromethane in CH2CI2 of 37.63 kJ mol can be calculated from Equation 3.9. Di-tert-butyl ketone was also investigated as a bulk liquid and corrected in the same way. For these weak Lewis bases, the corrections are very small. 

Their carbonyl function being flanked by two organic groups, ketones are less reactive toward nucleophiles than are aldehydes. Nevertheless even di-tert-butyl ketone combines with /erf-butyllithium in apolar media.Lithium tris-te/ /-butylcarbinolate is formed in excellent yield (81%) and proves perfectly stable. Contrarily, the addition of... 

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