Iodo iodoform

Jodo-. iodoxy- (IO2) iodo-. -benzoesaure,/. iodoxybenzoic acid, -benzol, n, iodoxyben-zene (C6H6IO2). -form, n. iodoform, -form-gaze, /. iodoform gauze, -formprobe, /. iodoform test,... 

The use of iodoform as the reagent precursor under Furukawa s conditions gives rise to a more complex scenario, since the additional C—I bonds can further react with an ethylzinc species (equation 8)" . The reaction of the iodo-substituted zinc carbenoid with an alkene will generate an iodo-substituted cyclopropane, whereas that involving the gem-dizinc carbenoid will lead to a cyclopropylzinc product. The evidence for the formation of a. gem-dizinc carbenoid was obtained not only by the analysis of the cyclopropanation products but also by the formation of rfi-iodomethane upon quenching the reagent with D2O/DCI. 

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

Whereas simple haloalkanes play a very important role in synthetic and mechanistic organic chemistry in the ground state, the interest in excited-state reactions centres more on polyhaloalkanes and on vinyl or aryl halides. Chloromethane absorbs only in the far ultraviolet (X-, . 173 nml, but ionger-wavelength absorption occurs for bromo- or iodo-cornpounds (CH, has A, 258 nrn and for polyhalo-compounds (iodoform, CHIj, has A, 349 nm and is coloured yellowi. 

Iodoform is used in surgery as an antiseptic. On account of its unpleasant odor many antiseptic preparations have been prepared in which the odor of iodoform, which most of them contain, is either disguised or eliminated. Eka-iodoform is a mixture of iodoform and paraformaldehyde anozel, of iodrform and thymol. The so-called di-iodoformis tetra-iodo-ethylene, C2I4. 

Acid-sensitive t-alcohols can be dehydrated by a process that is related to the Chugaev reaction but which takes place at much lower temperatures (refluxing THF) (Scheme 9). u/c-Diols react with iodoform, triphenylphosphine, and imidazole to give the corresponding olefin, probably via reductive elimination from a di-iodo intermediate this method is particularly useful for preparing unsaturated sugars. 

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