Methyl p-phenylethyl ketone

Unsymmetrical ketones containing Ar and OAr substituents in the alkyl radicals behave differently in the Pfitzinger reaction. Thus, methyl p-phenylethyl ketone reacts with isatin 7 in the presence of potassium hydroxide in water and alcohol through the methyl group - a single product 2-(P-phenylethyl)-4-quinolinecarboxylic acid is formed with a yield of 79% [22, 32],... 

No stereoselectivity was observed in the formation of a 1 1 diastereomeric mixture of 2-hydroxy-2-phenylethyl p-tolyl sulfoxide 145 from treatment of (R)-methyl p-tolyl sulfoxide 144 with lithium diethylamide . However, a considerable stereoselectivity was observed in the reaction of this carbanion with unsymmetrical, especially aromatic, ketones The carbanion derived from (R)-144 was found to add to N-benzylideneaniline stereoselectivity, affording only one diastereomer, i.e. (Rs,SJ-( + )-iV-phenyl-2-amino-2-phenyl p-tolyl sulfoxide, which upon treatment with Raney Ni afforded the corresponding optically pure amine . The reaction of the lithio-derivative of (-t-)-(S)-p-tolyl p-tolylthiomethyl sulfoxide 146 with benzaldehyde gave a mixture of 3 out of 4 possible isomers, i.e. (IS, 2S, 3R)-, (IS, 2R, 3R)- and (IS, 2S, 3S)-147 in a ratio of 55 30 15. Methylation of the diastereomeric mixture, reduction of the sulfinyl group and further hydrolysis gave (—)-(R)-2-methoxy-2-phenylacetaldehyde 148 in 70% e.e. This addition is considered to proceed through a six-membered cyclic transition state, formed by chelation with lithium, as shown below . ... 

Phenyl-3-butanone 4-Phenylbutan-2-one 4-Phenyl-2-butanone p-Phenylethyl methyl ketone... 

Phenylethyl methyl ethyl carbinol. See 1-Phenyl-3-methyl-3-pentanol Phenylethyl methyl ethyl carbinol acetate. See Phenethyl methyl ethyl carbinyl acetate P-Phenylethyl methyl ketone. See Benzyl acetone... 

Methoxyphenyl 2-Oxo-2-phenylethyl Tellurium Dichloride1 0.34 g (1 mmol) of 4-mcthoxyphenyl tellurium trichloride and 0.36 g (3 mmol) of methyl phenyl ketone are intimately mixed and allowed to stand for 48 h. During this time the product crystallizes. Diethyl ether is added to the mixture which is then shaken thoroughly. The ether is decanted, the crystals are quickly washed with a small amount of cold methanol, and recrystallized from benzene/petroleum ether (b.p. 50-70°) yield 0.25 g (60%) m.p. 137". 

P-Methylphenethyl butyrate. See2-Phenylpropyl butyrate Methyl phenethyl ether Methyl 2-phenethyl ether. See 2-Phenylethyl methyl ether Methyl phenethyl ketone. See Benzylacetone... 

Phenolphthalein, 32 Phenothiazine, 67 Phenylacetic acid, 49, 51, 53 Phenylbutyl methyl ketone, 53 Phenylethyl alcohol, 51 Phenylethyl methyl ketone, 53 Phloretin, 43 Phloridzin, 27, 30, 43 Phloroglucinol, 42 Phosphoglycerate, 31 Physical constants, 6 Pinacol, 38 Pinene, 75 Piperonal, 53 Piperonylic acid, 51 Porphyrin, 63 Pregnanediol, 83, 84 Progesterone, 84 Propiophenone, 54 p-hydroxy-, 55 n-Propyl alcohol, 37 Propylene glycol, 38 Protocatechuic acid, 50 Protocatechuic aldehyde, 52 Z-Pulegol, 72 d-Pulegone, 72 Pyramidone, 63, 67 Pyridine, 63 Pyruvic acid, 11, 31 o-hydroxyphenyl-, 66... 

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