Ethyl phenyl ketone

Write an equation showing how you could prepare ethyl phenyl ketone from propanenitrile and a Grignard reagent What is the structure of the imine intermediate ... 

Intermediates benzene to ethyl phenyl ketone to ethyl m nitrophenyl ketone to m aminophenyl ethyl ketone to ethyl m fluorophenyl ketone Reagents propanoyl chloride AICI3 HNO3 H2SO4 Fe HCl then HO NaN02 H2O HCl then HBF4 then heat... 

Propiophenone. Propiophenone [93-55-0] (ethyl phenyl ketone) is a colorless Hquid with a flowery odor. It can be prepared by the Friedel-Crafts reaction of benzene and propionyl chloride in the presence of aluminum chloride (346), or by the catalytic reaction of benzoic acid and propionic acid in the presence of water (347). Propiophenone is commercially available (348), and is sold in Japan at 2700 Y/kg (349). It is used in the production of ephedrine, as a fragrance enhancer, and as a polymerization sensitizer. 

We can use a ketone containing an ethyl groups and a phenyl group (ethyl phenyl ketone) and allow it to react with ethylmagnesium bromide ... 

S-methyIbutyraldehyde, 3-methylbutanal (c) a-chlorovaleraldehyde, 2-chloropentanal (d) methyl isopropyl ketone, 3-methyl-2-butanone (e) ethyl phenyl ketone, 1-phenyl-1-propanone (propiophenone) (/) methyl vinyl ketone, 3-buten-2-one. The C=0 group has numbering priority over the C=C group. 

Ethyl phenol, AN6l Ethylphenylamine, AN84 Ethyl phenyl ketone, AP32 Ethyl 3 P enyl-3-ketopropionate,... 

Recalling that arylamines are normally prepared by reduction of nitroarenes, we see that ethyl m-nitrophenyl ketone is a pivotal synthetic intermediate. It is prepared by nitration of ethyl phenyl ketone, which is analogous to nitration of acetophenone, shown in Section 12.16. The preparation of ethyl phenyl ketone by Friedel-Crafts acylation of benzene is shown in Section 12.7. 

Reversing the order of introduction of the nitro and acyl groups is incorrect. It is possible to nitrate ethyl phenyl ketone but not possible to carry out a Friedel-Crafts acylation on nitrobenzene, owing to the strong deactivating influence of the nitro group. 

A cationic catalyst prepared from [Rh(R-(PhCH2)MePhP)2(nbd)]+C104 has been used to hydrosilylate several alkylphenylketones (43). Optical yields ranging from 5 to 62% were reported, the most impressive being those for acetophenone (31.6% ee), ethyl phenyl ketone (43.1% ee), and r-butyl phenyl ketone... 

Ethyl 6 methyl aniline acetochlor, metolachlor, propisochlor Ethyl phenyl acetate flurtamone Ethyl phenyl ketone hexythiazox... 

This two-step sequence can synthesize many alkylbenzenes that are impossible to make by direct alkylation. For example, we saw earlier that n-propylbenzene cannot be made by Friedel-Crafts alkylation. Benzene reacts with n-propyl chloride and AICI3 to give isopropylbenzene, together with some diisopropylbenzene. In the acylation, however, benzene reacts with propanoyl chloride and A1C13 to give ethyl phenyl ketone (propiophenone), which is easily reduced to n-propylbenzene. 

ETHYL PHENYL KETONE see EOL500 5-ETHYL-5-PHENYL-N-METHYLBARBITURIC ACID see ENB500... 

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