Isopentyl

Isopentyl (CH3)2CHCH2CH2— Neopentyl (CH3)3CCH2— rert-Pentyl CH3CH2C(CH3)2— Isohexyl (CH3)2CHCH2CH2CH2-... 

Acetic acid 2-Methyl-1 -butanol Isopentyl acetate... 

Perilla ketone — see Ketone, 3-furyl isopentyl Perillene synthesis, 4, 668 Perinones, 1, 327, 337 Periodinane, bromo-synthesis, 1, 571 Periodinane, difluoro-reactions, 1, 571 Periodinanes cyclic... 

Chemical Designationis - Synonyms Fementation amyl alcohol Fusel oil Isobutylcarbinol Isopentyl alcohol 3-Methyl-l-butanol Potato-spirit oil Chemical Formula (CH3)2CHCH2CH20H. Observable Characteristics - Physical(asshipped) Liquid Color Colorless Odor. Mild odor alcoholic, non-residual. 

In this way isopentyl pentyl ether, heptyl pentyl ether, and 4,5-bis-methoxymethyI-2,2-dimethylheptane were also prepared from the appropriate thiophene derivatives. ... 

The oxidation described here was performed in 80% (v/v) acetonitrile — 20 % water (mole fraction of water = 0.42) at 35.0 °C. Figure 2 shows the selectivity as a function of the number of carbon atoms in R2. In the case of oxidation of la and 2a (R2 = branched alkyl groups), the selectivity reaches a sharp maximum (r = 2.4) at the isopentyl group (j = 2)l8). For R2 = straight-chain alkyl groups, alternation in the selectivity is clearly observed 18). The difference between the r value for la and 2a2 and that for la and 2h2 reaches up to 3.7. 

The same phenomenon was observed for oxidation of la and 2a2 in the presence of 7. When a series of branched alkyl groups are used as R4, the selectivity shows a minimum at the isopentyl group (Fig. 4)21). The r value of 1.4 for R4 = n-C5Hu differs largely from that for R4 = i-C5Hn (r = 0.30)21 . These results demonstrate that the more closely the substituent R4 of 7 resembles the isopentyl group of 2 in geometrical shape, the more remarkably the selectivity is lowered. 

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