Isobutyl iodide

Isobutyl iodide (l-iodo-2-methylpropane) [513-38-2] M 184.0, b 83°/250mm, 120°/760mm, d 1.60, n 1.495. Shaken with cone H2SO4, and washed with water, aqueous Na2S03, and water, dried with MgS04 and distd. Alternatively, passed through a column of activated alumina before distn. Stored under nitrogen with mercury in a brown bottle or in the dark. 

Iodoform [75-47-8] M 393.7, m 119°. Crystd from MeOH, EtOH or EtOH/ethyl acetate. l-Iodo-2-methylpropane see isobutyl iodide. 

Isobutyl chloride Sodium Isobutyl iodide Sodium... 

Treating isobutyl bromide with sodium iodide in acetone converts it to isobutyl iodide. (CH3)2CHCH2Br J e > (CH3)2CHCH2I... 

In 1855, Wurtz emphasised the importance of sodium for preparing the paraffin hydrocarbons, and prepared di-isobutyl, by the action of the metal upon isobutyl iodide ... 

Synthesis of[ 1-11C]-labelled ethyl, propyl, butyl and isobutyl iodides, and N-[1-11 C-ethyl]lidocaine, 178, N-[1-11C-butyl]bupivacaine, 179, and 3-nitrophenyl [1-11C]propyl ether, 180... 

When the 73 27 mixture of crude carboxylic acid 110 and the monocyclic diacid 111 was treated with isobutyl iodide/Cs2C03 in hot DMF, only Wisobutyl isobutyl ester 112 was obtained (Equation 17) <2005JOC688>. Apparently the C(7)-C02H of 111 is esterified, along with the C(9)-C02H, and the C(7)-estet is recycled through the intramolecular cyclization. 

Twenty-five grams (0.088 mole) of ethyl benzamidomalonate (p. 145) and 24 g. (0.13 mole) of isobutyl iodide are added to a solution of 2.1 g. of sodium in 200 ml. of dry absolute ethanol (p. 142). The mixture is heated under reflux for 3,5 hours with protection from... 

By heating zinc with isobutyl iodide for eight to ten hours on a water-bath, until gas evolution ceases, then rapidlj distilling the product. Yield 35 to 41 per cent. 

With isobutyl iodide it gives trimethylethylmethanej ethylene, and isobutylene. ... 

Mercury di-isoamyl.—This compound may be prepared in the same way as mercury di-isobutyl by replacing the isobutyl iodide by isoamyl iodide. It is a colourless, transparent, mobile liquid, possessing a faint amyl odour, and cannot be distilled even in vacuo without partial decomposition, although it is volatile in steam without decomposition. If heated above 140° C. considerable quantities of mercury separate. Its boiling-point at 70 mm. is 172° C., and the density at 0° C. is 1 6663. ... 

Tin di"isobutyl salts.—The dichloride is a colourless, mobile, heavy liquid, B.pt. 260° to 262° C., solidifying at 5° to 6° C. to a mass of silky needles resembling asbestos, whilst the di-iodide occurs as a colourless liquid, B.pt. 290° to 295° C., obtained by heating tin foil and isobutyl iodide to 120° or 125° C. in a sealed tube for several hours. With potassium or ammonium hydroxide it yields a white, amorj hous precipitate of the oxide, which gives crystalline salts with acids. 

---