Search results
Results From The WOW.Com Content Network
2 Al + 6 iPrOH → 2 Al(O-i-Pr) 3 +3H 2 AlCl 3 + 3 iPrOH → Al(O-i-Pr) 3 + 3 HCl. The procedure entails heating a mixture of aluminium, isopropyl alcohol, with a small amount of mercuric chloride. The process occurs via the formation of an amalgam of the aluminium. A catalytic amount of iodine is sometimes added to initiate the reaction. [4]
The anhydrous phase cannot be regained on heating the hexahydrate. Instead HCl is lost leaving aluminium hydroxide or alumina (aluminium oxide): [Al(H 2 O) 6]Cl 3 → Al(OH) 3 + 3 HCl + 3 H 2 O. Like metal aquo complexes, aqueous AlCl 3 is acidic owing to the ionization of the aquo ligands: [Al(H 2 O) 6] 3+ ⇌ [Al(OH)(H 2 O) 5] 2+ + H +
It is written as Al(Hg) in reactions. [1] Al(Hg) may be prepared by either grinding aluminium pellets or wire in mercury, or by allowing aluminium wire to react with a solution of mercury(II) chloride in water. [2] [3] [1] This amalgam is used as a chemical reagent to reduce compounds, such as of imines to amines. The aluminium is the ultimate ...
Because of the explosion hazard related to hydrogen produced by the reaction of aluminium with hydrochloric acid, the most common industrial practice is to prepare a solution of aluminium chlorohydrate (ACH) by reacting aluminium hydroxide with hydrochloric acid. The ACH product is reacted with aluminium ingots at 100 °C using steam in an open ...
A reaction modification with an aromatic phenyl ester as a reactant is called the Fries rearrangement. In the Scholl reaction two arenes couple directly (sometimes called Friedel–Crafts arylation). [22] In the Blanc chloromethylation a chloromethyl group is added to an arene with formaldehyde, hydrochloric acid and zinc chloride.
Alcohol oxidation is a collection of oxidation reactions in organic chemistry that convert alcohols to aldehydes, ketones, carboxylic acids, and esters. The reaction mainly applies to primary and secondary alcohols. Secondary alcohols form ketones, while primary alcohols form aldehydes or carboxylic acids. [1] A variety of oxidants can be used.
Several side reactions are known to occur. In the case of ketones and especially aldehydes aldol condensations have been observed. Aldehydes with no α-hydrogens can undergo the Tishchenko reaction. [7] Finally, in some cases the alcohol generated by the reduction can be dehydrated giving an alkyl carbon.
In chemistry, an alcohol (from Arabic al-kuḥl 'the kohl'), [2] is a type of organic compound that carries at least one hydroxyl (−OH) functional group bound to a saturated carbon atom. [ 3 ] [ 4 ] Alcohols range from the simple, like methanol and ethanol , to complex, like sugar alcohols and cholesterol .