4- Methyl-1 -phenyl-1 -hexanone

That the triplet reaction involves a biradical as shown in Scheme 4 has been convincingly demonstrated. For example, (4S)-(+ )-4-methyl-1-phenyl-1-hexanone (57), on irradiation in benzene, gives the products shown in Scheme 5... 

Quantum yield data for several processes that occur on photolysis of 5-4-methyl-1-phenyl-1-hexanone have been determined. The results are tabulated below for benzene as solvent ... 

This method, an adaptation of a previously described procedure,2- 8-4 has been used with a variety of amino acids and anhydrides to give the following products 1-phenyl-1-propionamidO-2-butanone (75%) 6 acetamidoacetylacetone (60%) 6 N-methyl-acetamidoacetone 6 l-phenyl-2-acetamido-3-butanone (79%) 7 l-phenyl-2-propionamido-3-pentanone (41%) 7 l-phenyl-2-butyr-amido-3-hexanone (27%) 7 a-benzamidopropiophenone (42%) 7 a-benzamido-/3-phenylpropiophenone (44%) 7 1 -phenyl-1 -aceta-midoacetone (72-90%) 8-91-phenyl-1-benzamidoacetone (65%) 8 l-phenyl-2-benzamido-3-butanone (78%) 8 3-benzamido-2-buta-none (65-88%) 8 and 3-acetamido-5-methyl-2-hexanone (73%).10... 

Probkm 28.28 Using 9-BBN plus any alkenes and unhalogenated acids or ketones, outline all steps in the synthesis of (a) 2-heptanone (b) 4-methylpentanoic acid (c) 4-methyl-2-hexanone (d) l-cyclohexyl-2-propanone (e) ethyl (trans Z-methylcyclopentyl)acetate (f) l>phenyl-4-methyM-pentanone (g) i-cyclopentyl-33 dimethyl-2-butaBone. 

Figure 5.2.11. Cellulose pyrolysate obtained at 59(P C and separated on a methyl silicone with 5% phenyl silicone type column. 1 acetic anhydride, 2 pentanal, 3 2-hydroxybutanedialdehyde, 4 1,4-dioxadiene, 5 tetrahydro-2-furanmethanol, 6 2-(hydroxymethyl)-furan, 7 3-methyl-2-hexanone, 8 2-methoxy-2,3-dihydrofuran, 9 2(5H)-furanone, 10 1-acetyloxypropan-2-one, 11 hydroxycyclopentenone, 12 5-methylfurfural, 13 2,3-dihydro-5-methylfuran-2-one, 14 1-cyclopentylethanone, 15 2-hydroxy-3-methyl-2-cyclopenten-1-one, 16 3,5-dimethylcyclopentan-1,2-dione, 17 unknown, 18 3-ethyl-2,4(3H,5H)-furandione, 19 6-methyl-1,4-dioxaspiro[2,4]heptan-5-one, 20 1-hydroxy-3,6-dioxabicyclo[3.2.1]octan-2-one, 21 1,4 3,6-dianhydro-a-D-glucopyranose, 22 5-(hydroxymethyl)-furfural, 23 4-cyclopenten-1,2,3-triol, 24 5-ethyl-3-hydroxy-4-methyl-tetrahydrofuran-2-one, 25 levoglucosan, 26 1,6-anhydro-p-D-glucofuranose.

Japanese cedar (Cryptomeria japonka) Anaj lyptus subjiisciatus Methyl Phenyl Acetate (R)-3-hydroxy-2-hexanone, (R)-3-hydroxy-2-octanone [222]... 

Label all a- and fi-bonds for each functional group in (a) 4 hydroxy-5-methyl-2-hexanone, (b) 2-cyano-l-phenyl-l-propanoI, and (c) 2-methyl-6-pbenyl-3-hexanone. 

C,H Br,0 8.8.Dibrom-2-methyl-8-phenyl-hexanon-(4) 7 II 264. tert.-Butyl-[et. dibn>m./J-pbeDyl-atbylJ-ketOD 7, 338. 

Type I cleavage of ketones, 75 Type II cleavage of ketones effect of 7-substituents, 122-124 effect of ring substituents, 124 of 5 -(+)-4-methyl-l-phenyl-1- hexanone, 118... 

Syn 3-(Ethylth(oniethyl)-4-hydroxy-6-phenyl>2-hexanone (4) and amt (5) 3 To emanethwi (to 0 mg 0 17 mmol) in the (2 mL) was added 1 54 M n butyliithwm in hexane (0 11 mU at 0°C under Ar Stannous Inflate (69 0 mg 0 17 mmol) was added and alter 20 mm the mixture was cooled to 45°C Methyl vinyl Ketone 1 (118 mg 1 98 mmol) m THE 1 5 mL) was added followed by 3 phenylpropanal 3 (350 mg 2 61 mmol) in THE (1 5 mL) Alter 12 h aq cilnc acid was added and the organic material extracted with CHjCia The resxlue after evaporation was dissolved in MeOH and treated with citric acid After 30 mm stimng. the mixture was quenched with pH 7 phosphate buffer extracted with CH2CI2, the solvent evaporated and the residue chromatographed to afford 336 mg of 4 (75%), syn anti (90 10)... 

C12H1404 (S)-2-benzylsuccinic acid-1-methyl ester 182247-45-6 527.09 46.493 2 24192 C12H160 1-phenyl-1-hexanone 942-92-7 538.15 47.561 1,2... 

Ketones-. 3-Hexanone (50), 2-hexanone (49), 3-undecanone (7S), l-phenyl-2-butanone (72), 5-methyl-3-heptanone (59) ... 

With large-pore zeolites, yields of 80-90% were obtained from the phenylhydrazones of 3-hexanone, 3-undecanone, 5-methyl-3-heptanone, and 1-phenyl-2-butanone. 

Quantum yield data for three competing processes that occur on photolysis of 5 -methyl-l-phenyl-1-hexanone at 313 nm in benzene have been determined and are tabulated below. When the reaction is run in r-butanol, the racemization is entirely suppressed and the Type-II fragmentation is the major reaction. What information do these data provide about the mechanism operating under these conditions ... 

Ketone, butyl methyl. See 2-Hexanone Ketone C-7. See Methyl n-amyl ketone Ketone, dimethyl. See Acetone Ketone, ethyl phenyl. See Ethyl phenyl ketone Propiophenone... 

Biocatalysis in Preparative Organosilicon Chemistry Microbial Reduction of rflc-l-(4-Fluorophenyl)-l-methyl-l-sila-2-cyclo-hexanone and Microbial Hydrolysis of r c-(Si5,Ci /Si/ ,C S)-2-Acetoxy-l-(4-fluoro-phenyl)-l-methyl-l-silacyclohexane... 

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