Iodo-alkanes

With the exception of CHjI, both steps might occur in any of the mono-iodo alkanes. 

Fluoroalkyl iodides are oxidized at the iodine atom by trifluoroperoxyacetic add [779, 720] or by a mixture of tnfluoroacetic anhydride and hydrogen peroxide [77[Pg.357]

We assume that the reaction is initiated by electron transfer from copper to the aetivated iodoalkane (Fig. 2). The electrophilic radical formed after cleavage of the halide adds to the electron-rieh double bond of the alkene, and subsequent iodo ab-straetion yields a methyl 4-iodoalkanoate that cyclizes to a y-lactone with elimination of iodo alkane. 

Scheme 1)/ The synthesis of co-substituted alkyl 1-thio-a-D-mannopyranosides has been achieved using the appropriate co-substituted bromo- or iodo-alkane in the presence of potassium carbonate on 1-thiomannose peracetate, which was either isolated or generated in situ by base cleavage of the amidino-group in... 

Similar nomenclature obtains for fluoro-, bromo-, and iodo-alkanes. 

A parallel situation holds for bromo- and iodo-alkanes. The Raman... 

The iodo-alkanes have been studied in detail by Bentley et al [29]. The overall range is 600—465 cm", but the ranges for the individual rotamers are again much smaller, nd the specific forms can therefore be identified. The values for the separate forms are tabulated above. 

Keywords Alkenes, (diacetoxyiodo)benzene (DAIB), iodine, nucleophiles (Nu), acetcmitrile, room temperature, co-iodination reaction, iodo-alkanes... 

To a solution of alkene (1 2.0 mmol) and the nucleophilic additive (10 nunol) in acetonitrile (12 mL) were added (diacetoxyiodo)benzene (DAIB 3.0 nunol), and iodine (1.5 mmol) in one portion, and the mixture was stirred at room temperature for 2 h for completion. The reaction mixture was then poured in water (40 mL) and extracted with dichloromethane (2 x 30 mL), followed by decolorizing the reaction mixture with the addition of required amount of solid NaHSOa. The combined organic extract was then dried over anhydrous magnesium sulfate and evaporated to yield the crude product, which was purified by colunm chromatography (petroleum ether/dichloromethane) on silica to afford iodo-alkane 2. Each of the products was characterized by spectral studies. 

Microwave induced electrophilic addition alkyl halides to single-walled carbon nanotubes (SWNTs) has been reported using Lewis acid as a catalyst and followed by hydrolysis (Xu et al., 2008). This reaction provides alkyl and hydroxyl groups attached on the surface of the nanotubes within few mia It was observed that iodo-alkanes show higher reactivity with SWNTs than chloro and bromoalkanes. 

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