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In organic chemistry, an acyl chloride (or acid chloride) is an organic compound with the functional group −C(=O)Cl. Their formula is usually written R−COCl, where R is a side chain. They are reactive derivatives of carboxylic acids (R−C(=O)OH). A specific example of an acyl chloride is acetyl chloride, CH 3 COCl.
The Tsuji–Wilkinson decarbonylation reaction is a method for the decarbonylation of aldehydes and some acyl chlorides. The reaction name recognizes Jirō Tsuji, whose team first reported the use of Wilkinson's catalyst (RhCl(PPh 3) 3) for these reactions: RC(O)X + RhCl(PPh 3) 3 → RX + RhCl(CO)(PPh 3) 2 + PPh 3
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions.
Chloride cycle dealkalizers operate similar to sodium cycle cation water softeners. Like water softeners, dealkalizers contain ion-exchange resins that are regenerated with a concentrated salt solution - NaCl. In the case of a water softener, the cation exchange resin is exchanging sodium (the Na + ion of NaCl) for hardness minerals such as ...
The reactivity of chloroformates and acyl chlorides are similar. Representative reactions are: Reaction with amines to form carbamates: [2] ROC(O)Cl + H 2 NR' → ROC(O)-N(H)R' + HCl. Reaction with alcohols to form carbonate esters: ROC(O)Cl + HOR' → ROC(O)-OR' + HCl. Reaction with carboxylic acids to form mixed anhydrides:
Unlike typical acid chlorides, which are often prepared from the associated carboxylic acid, dichloroacetyl chloride is not prepared from dichloroacetic acid. Instead, industrial routes include oxidation of 1,1,2-trichloroethane, hydrolysis of pentachloroethane, and the carboxylation of chloroform: [4] CHCl 2 CH 2 Cl + O 2 → CHCl 2 COCl + H 2 O
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