Aldehydes anhydrides

Lithium aluminum hydride (LiAlH4) is the most powerful of the hydride reagents. It reduces acid chlorides, esters, lactones, acids, anhydrides, aldehydes, ketones and epoxides to alcohols amides, nitriles, imines and oximes to amines primary and secondary alkyl halides and toluenesulfonates to... 

Friedel-Crafts acylation reactions of aromatics are promoted by Tilv complexes.104 In some cases, a catalytic amount of the titanium compound works well (Scheme 28). In addition to acyl halides or acid anhydrides, aldehydes, ketones, and acetals can serve as electrophile equivalents for this reaction.105 The formylation of aromatic substrates in the presence of TiCl4 is known as the Rieche-Gross formylation metalated aromatics or olefins are also formylated under these conditions.106... 

This method is mostly applicable to official compounds belonging to the class of esters, acid anhydrides, aldehydes and acid chlorides. In practice this method applies to such substances that normally react too slowly with the titrant because of their poor solubility which may be accomplished either by a heating process or by a precipitation method so as to convert the substance capable for reaction with the standard base. 

Several resins have been used frequently in reactant sequestration. Ami-nomethylpolystyrene 1 and the more highly functionalized polyamine resins 2 and 3 have been reported to sequester excesses of solution-phase electrophiles, including isocyanates, isothiocyanates, sulfonyl chlorides, acid chlorides, anhydrides, aldehydes, and imines. Cross-site reactivity is not an issue with the more densely functionalized sequestering resins so their use in an automated laboratory environment offers a significant resin and volume economy compared to less densely functionalized resins. 

Violent reaction with acids, trans-acetylene dichloride, alcohols, organic anhydrides, aldehydes, alkylene oxides, aminotetrazole, /j-bis(l,3-dibromoethy )benzene, bromoform, captrolactam solution, chlorine dioxide (explodes), chloroform, cresols, cyclopentadiene, cis-dichloroethylene, epichlorohydrin, ethylene dichloride, germanium, glycols, halogenated hydrocarbons, iodine pentafluoride, isocyanates, maleic anhydride, nitrogen trichloride,... 

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