Accetto Utilizziamo cookies per migliorare il nostro servizio e realizzare statistiche. Questa funzione puó essere disattivata cambiando la configurazione del browser. Continuando a navigare senza modificare questi parametri, consideriamo che l’uso di cookies sia accettato
Dess Martin periodinane is used to oxidize primary alcohols to aldehydes and secondary alcohols to ketones. It is also used as an oxidant for complexes with multifunctional alcohols. It is actively involved in the oxidation of N-protected-amino alcohols without epimerization and allylic alcohols.
One of the mildest reagents for the selective oxidation of primary and secondary alcohols to aldehydes and ketones. High yields can be obtained at ambient temperatures, under neutral conditions, in chloroform, dichloromethane or acetonitrile: J. Org. Chem., 48, 4155 (1983); J. Am. Chem. Soc., 113, 7277 (1991); (reviews): J. Prakt. Chem./ Chem. Ztg., 338, 588 (1996); Synlett, 278 (2000). Has been employed for the oxidation of a wide variety of sensitive substrates and is particularly valuable in multi-step syntheses of polyfunctional molecules with complex stereochemistry. For an example involving exclusive oxidation of one of four possible secondary OH groups in a synthesis of erythromycin B, see: J. Am. Chem. Soc., 119, 3193 (1997). Allylic and benzylic alcohols can be oxidized selectively in the presence of saturated alcohols, and give the carbonyl compounds cleanly without over-oxidation or cis-trans isomerization: Tetrahedron Lett., 29, 995 (1988); J. Org. Chem., 55, 1636 (1990).
Hydroxamic acids are oxidized to acyl nitroso compounds which can undergo cycloaddition to dienes: Synth. Commun., 30, 47 (2000).
Has also been used for deoximation of ketoximes to ketones under mild conditions: Tetrahedron Lett., 39, 3209 (1998); Synthesis, 760 (1999).
For use in the synthesis of imides, N-acyl vinylogous carbamates and ureas, and nitriles, by oxidation of amides and amines, see: Angew. Chem. Int. Ed., 44, 5992 (2005).
Deprotection of thioacetals can be accomplished under extremely mild conditions: Org. Lett., 5, 575 (2003).
ɑ,ß-Unsaturated carboxylic acids undergo Hunsdiecker-type decaboxylative bromination with tetraethylammonium bromide in the presence of the reagent: Synlett, 2495 (2005).
CAUTION! In the presence of moisture, may form iodoxybenzoic acid which has been reported to be explosive under excessive heating or impact: Chem. Eng. News, 68(29), 3 (1990).
For a detailed discussion of the scope and advantages of this reagent, see: Encyclopedia of Reagents for Organic Synthesis, L. A. Paquette, Ed., Wiley, Chichester (1995), vol. 7, p. 4982.
Gamapwar, S. V.; Tale, N. P.; Karade, N. N. Dess-Martin Periodinane-Mediated Oxidative Aromatization of 1,3,5-Trisubstituted Pyrazolines. Synth. Commun. 2012, 42 (17), 2617-2623.
Schrockeneder, A.; Stichnoth, D.; Mayer, P.; Trauner, D. The crystal structure of the Dess-Martin periodinane. Beilstein J. Org. Chem. 2012, 8, 1523-1527.
Dichiarazioni di rischio (UE): H272-H315-H319-H335
May intensify fire; oxidizer. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Dichiarazioni precauzionali: P221-P210v-P220-P305+P351+P338-P405-P501a
Take any precaution to avoid mixing with combustibles. Keep/Store away from clothing/combustible materials. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.