Acenaphthylene bromination

Figure 10.4. Plot of for (1) acenaphthylene and (2) 5-bromoacenaphthylene versus concentration of bromine in the solvent. Reproduced with permission from Ref. 69.

Bromine-atom atomic resonance absorption spectrometry (ARAS) has been applied to measure the thermal decomposition rate constants of CF3Br in Kr over the temperature range 1222-1624 K. The results were found to be consistent with recently published theory. The formation of cyclopent[a]indene and acenaphthylene from alkyl esters of biphenyl-mono- and -di-carboxylic acids has been observed in flash vacuum pyrolyses at 1000-1100 °C. The kinetics and mechanisms of free-radical generation in the ternary system containing styrene epoxide, / -TsOH, and i-PrOH have been examined in both the presence and absence of O2. ... 

The silver(I) fluoride/bromine and silver(I) fluoride/iodine systems can be exploited for generation in situ and electrophilic addition of "bromine monofluoride and iodine monofluoride to cyclohexene, mcthylenecyclohcxane, styrene, indene, and acenaphthylene.55... 

A new examination of the bromination and chlorination of acenaphthylene revealed that the relative amount of the yyw-adduct increased as the solvent polarity decreased. At 4-6 °C the yyw-dibromide remained unchanged for a year, and hexane was found to be the best solvent for its preparation143. 

Bromine cyanide. See Cyanogen bromide Bromine monochioride. See Bromine chloride Bromoacenaphthylene CAS 208-96-8 EINECS/ELINCS 205-917-1 Synonyms Acenaphthylene Cyclopenta(de)naphthalene Definition Peri-ethylene naphthalene derived from coal tar... 

PROBLEM 10.7 Addition of Bt2 to acenaphthylene gives large amounts of the product of cis addition along with the usual trans dibromide. Give a mechanism for this bromination and, more important, explain why the mechanism of the reaction shown below is different from the typical selectivity for only trans addition. Why is cis product formed in this case ... 

The reaction of triyne 3.680 with bromine yields not only the major product ( )-3.681 but also the acenaphthylene derivative 3.682 in a ratio of 4 1, respectively (Scheme 3.69). The major product ( )-3.181 readily converts to (Z)-izomer during column chromatography [306]. 

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