1 -Methyl-4-tert-butylbenzene

SYNS p-METHYL-tert-BUTYLBENZENE 1-METHYL-4-tert-BUTYLBENZENE TBT... 

C11H16 1 -methyl-4-tert-butylbenzene 98-51-1 465.91 40.200 1,2 22432 C11H160 3-isopropyl-2-methylanisole 31202-12-7 486.71 42.608 2... 

Synonyms p-Methyl-tert-butylbenzene TBT l-methyl-4-tertiary butylbenzene... 

SYNONYMS benzene, l-methyl-4-(l,l-dimethylethyl)-(9CI), 4-tert-butyltoluene, p-methyl-tert-butylbenzene, l-methyl-4-tert-butylbenzene, tbt. 

Alternative Names/Abbreviations p-Methyl-tert-butylbenzene, 1-methyi-4-tert butylbenzene, TBT... 

Methyl-1,3-butadiene) see Isoprene (3-Methyl-1-butanol) see Isopentyl alcohol (4-Methyl-tert-butylbenzene) see p-tert-Butyltoluene (Methyl tert-butyl ether) see tert-Butyl methyl ether (3-Methylbutyl nitrite) see Isopentyl nitrite (3-Methylbutyraldehyde) see Isovaleraldehyde (Methyl CarbitoF ) see Methyldiglycol (Methyl Cellosolve ) see Methyl glycol... 

SYNS BIS(3-tert-BU1TL-4-HYDROXY-6-METHYL-PHENYL) SULFIDE BIS(4-HYDROXY-5-tert-BUTyL-2-METHYLPHENYL) sulfide DISPERSE MB-61 SANTONOX SANTOVC HITE CRYSTALS THIOALKOFEN BM 4 4,4 -THIOBIS(2-tert-BUTYL-5-METHYLPHENOL) 4,4 -THIOBIS(6-tert-BUTYL-3-METHYLPHENOL) 4,4 -THIOBIS(3-METHYL-6-tert-BUTYLPHENOL) l,l -THIOBIS(2-METHYL-4-HYDRO-XY-5-tert-BUTYLBENZENE) USAFB-15 YOSHINOX S... 

This picture is somewhat generalized, since there are some exceptions. For instance, the chlorination of toluene proceeds faster than that of tert-butylbenzene. H perconjugation (Scheme 2.16) is at a maximum for a methyl group and has been offered as an explanation for these anomalies. 

KH Di-n-Propyl Ketone —o—l Methyl Ethyl Ketone —o—l tert-Butylbenzene... 

SYNONYMS antioxidant ao, bis (4-hydroxy-5-tert-buyl-2-methylphenyl)sulfide, 4,4 -thiobis(3-methyl-6-tert-butylphenol), l,r-thiobis(2-methyl-4-hydroxy-5-tert-butylbenzene). 

There are three major limitations on the Friedel-Crafts alkylation. The first is the possibility for rearrangement of the alkyl group. Friedel-Crafts alkylation generates a carbocation, and as we have already seen in Section 6.3C, carbocations may rearrange to a more stable carbocation. For example, reaction of benzene with l-chloro-2-methylpropane (isobutyl chloride) gives only 2-methyl-2-phenylpropane (tert-butylbenzene). 

C13H1303] 3 4 0 5 C00CH2C6H5 Phot, of DTBP in the presence of corresp. 2,5-dihydro-2-methyl-furan-2-carboxylate tert-Butylbenzene 2.003(1) 2H(2,4) 1.34 H(3) 0.20 97Binl... 

Decarbonylation of 3-methyl-3-phenylbutanal with the Wilkinson complex gave exclusively tert-butylbenzene (Scheme 8.8) [24]. No rearrangement product was observed. 

It was found that although neophyl chloride did not react with pure phenyl magnesium bromide, it reacted vigorously in the presence of cobaltous chloride to give tert-butylbenzene (27 ), isobutylbenzene (l5 ), 2-methyl-3-phenyl-propene (9 ), 3,3-dimethylstyrene (U ), and a mixture of dimers and biphenyls - all of these products having to be identified by boiling point, refractive index, etc. It was concluded that the neophyl free radical, lU, had rearranged to the 3,3-dimethylphenethyl radical, IR. 

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