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Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH 3 CO) 2 O. Commonly abbreviated Ac 2 O, it is the simplest isolable anhydride of a carboxylic acid and is widely used as a reagent in organic synthesis. It is a colorless liquid that smells strongly of acetic acid, which is formed by its reaction with ...
A major industrial route involves the reaction of acetaldehyde and acetic anhydride in the presence of a ferric chloride catalyst: [1] [2] CH 3 CHO + (CH 3 CO) 2 O → (CH 3 CO 2) 2 CHCH 3. It can be converted to the valuable monomer vinyl acetate by thermal elimination of acetic acid: (CH 3 CO 2) 2 CHCH 3 → CH 3 CO 2 CH=CH 2 + CH 3 CO 2 H
The major industrial route involves the reaction of ethylene and acetic acid with oxygen in the presence of a palladium catalyst. [ 6 ] 2 C 2 H 4 + 2 CH 3 CO 2 H + O 2 2 CH 3 CO 2 CHCH 2 + 2 H 2 O {\displaystyle {\ce {2 C2H4 + 2 CH3CO2H + O2 -> 2 CH3CO2CHCH2 + 2 H2O}}}
Acetic acid / ə ˈ s iː t ɪ k /, systematically named ethanoic acid / ˌ ɛ θ ə ˈ n oʊ ɪ k /, is an acidic, colourless liquid and organic compound with the chemical formula CH 3 COOH (also written as CH 3 CO 2 H, C 2 H 4 O 2, or HC 2 H 3 O 2).
The systematic IUPAC name is not always the preferred IUPAC name, for example, lactic acid is a common, and also the preferred, name for what systematic rules call 2-hydroxypropanoic acid. This list is ordered by the number of carbon atoms in a carboxylic acid.
Ethyl acetate (systematically ethyl ethanoate, commonly abbreviated EtOAc, ETAC or EA) is the organic compound with the formula CH 3 CO 2 CH 2 CH 3, simplified to C 4 H 8 O 2.This flammable, colorless liquid has a characteristic sweet smell (similar to pear drops) and is used in glues, nail polish removers, and the decaffeination process of tea and coffee.
Allyl acetate is produced industrially by the gas phase reaction of propene in the presence of acetic acid using a palladium catalyst: [2] [3] C 3 H 6 + CH 3 COOH + ½ O 2 → CH 2 =CHCH 2 OCOCH 3 + H 2 O. This method is advantageous because propene is inexpensive and a green chemical. Allyl alcohol is also produced primarily from allyl ...
The mechanism of the Pummerer rearrangement begins with the acylation of the sulfoxide (resonance structures 1 and 2) by acetic anhydride to give 3, with acetate as byproduct. . The acetate then acts as a catalyst to induce an elimination reaction to produce the cationic-thial structure 4, with acetic acid as byprod