Propanone methoxy

Chemically, wood tar is a complex mixture that contains at least 200 individual compounds, among which the foUowing have been isolated (1) 2-methoxyphenol, 2-methoxy-4-ethylphenol, 5-meth5i-2-methoxyphenol, 2,6-x5ienol, butyric acid, crotonic acid, 1-hydroxy-2-propanone, butyrolactone, 2-methyl-3-hydroxy-4JT-pyran-4-one, 2-methyl-2-propenal, methyl ethyl ketone, methyl isopropyl ketone, methyl furyl ketone, and 2-hydroxy-3-methyl-2-cyclopenten-l-one. 

Bcnzophenon-oxim und Dicyclohexylketon-oxim werden in Bis-[2-methoxy-athyl]-ather bei 105-110°, 1,3-Diphenyl-propanon-(2)-exim in 1,4-Dioxan bei 85-90° durch Diboran zu den Hydroxylaminen reduziert . 

This extension of the Smith analysis, involving methylation of the polyalcohol, has been studied in detail by Bose, both on model systems and on the Ti fructan.84 When a ffuctan is used, this method may give l-hydroxy-3-methoxy-2-propanone and l,3-dimethoxy-2-propa-none, together with methylated glycerols. These compounds may react further under methanolysis conditions to yield 2,5-dimethoxy-2,5-bis(methoxymethyl)-l,4-dioxane and l,3-dimethoxy-2-propanone dimethyl acetal, respectively. Several of these compounds may be obtained from sucrose by a model reaction. In view of the wide variety of hydroxy compounds obtained in this study,84 their separation and identification as benzeneboronates was investigated, and certain of the latter derivatives were purified by gas-liquid chromatography. The characterization of 1,2- and 1,3-diols by the mass spectra of their cyclic benzeneboronates has also been described.634... 

Chemical Name 3-(3-Ethenyl-4-piperidinyl)-l-(6-methoxy-4-quinolinyl)-l-propanone... 

The regioselectivity of the Paterno-Biichi reaction with acyclic enol ethers is substantially higher than with the corresponding unsymmetrically alkyl-substituted olefins. This effect was used for the synthesis of a variety of 3-alkoxyoxetanes and a series of derivatives [55]. The diastereoisomeric cis-and tnms-l-methoxy-l-butenes were used as substrates for the investigation of the spin state influence on reactivity, regio- and stereoselectivity [56]. The use of trimethylsilyloxyethene 62 as electron rich alkene is advantageous and several 1,3-anhydroapiitol derivatives such as 63 could be synthesized via photocycloaddition with l,3-diacetoxy-2-propanone 61 (Sch. 17) [57]. 

C9H12N2 2-propanone phenylhydrazone 103-02-6 474.65 41.454 2 17152 C9H1202 4-methoxy-alpha-methylbenzenemethanol 3319-15-1 583.15 51.928 2... 

Electrochemical reduction of 1,3-dibromo ketones in methanol at O C gave cyclo-propanone hemiacetals in excellent yields, e.g. reduction of 29 gave 30 in 90% yield.This conversion can be performed in quantiative yield, thus avoiding formation of the Favorskii ester and an a-methoxy ketone, by working up the reaction mixture at temperatures below 0°C. The intermediacy of cyclopropanones in the reaction was shown by IR monitoring of the controlled-potential electrolysis of l,3-dibromo-3-methylbutan-2-one in dimethylformam-ide in the presence of tetraethylammonium bromide at room temperature. The typical IR absorption at 1825 cm" is direct evidence of the presence of 2,2-dimethylcyclopropanone. ... 

Methoxy-a-(phenylthio) ketones, e.g., 3-methoxy-l-phenyl-2-phenylthiopropanone and 5-methoxy-l-phenyl-4-phenylthio-l-penten-3-onc (Table 6), can also be reduced with syn selectivity by zinc borohydride. calcium borohydride and lithium triethylborohydride82. For zinc and calcium borohydride, at least, it is reasonable to suppose that the transition state 4 (where R3 = MOM) is reinforced by /1-chclation. These reagents are actually more successful than L-Selectride in the reduction of 3-methoxy-1-phenyl-2-phenylthiopropanone, where the L-Se-lectridc result is anomalously poor. A /5-hydroxy substrate, 3-hydroxy-2-mcthylthio-l-phenyI-propanone, could be reduced to 2-methylthio-l-phenyl-l,2-propanediol with good syn selectivity using zinc borohydride (yield 65% d.r. 93 7)81. 

Viquidil. 3 (3-Elhenyt 4-piperidinyi) l-t6-melh-oxy-4-quinollnyl)-l -propanone uruic[Pg.1574]

Piperidine (4.9 g) in anhydrous ether (30 ml) is added, with ice-cooling, during 40 min to 2-methoxy-3-nitro-l-phenyl-1-propanone (12 g) in anhydrous ether (130 ml). The mixture is kept for 20 h, then the precipitate is filtered off, and the ethereal solution is washed with 2 % hydrochloric acid and with water, dried over sodium sulfate, and evaporated. Distillation of the residue at 50-60° (bath-temperature)/0.01-0.03 mm gives the unsaturated ketone (7.7 g, 83%). 

M p-methoxy-benzyl-methyl ketone (l-p-methoxy-phenyl-2-propanone) (or analog), 20 g NH Cl, 225 ml methanol saturated with NHj, 25 ml NH OH and shake with 1-3 atmospheres Hj until uptake ceases. Filter, wash precipitate with methanol or acidify with HCl and dry, evaporate in vacuum to get p-methoxy-amphetamine or analog. 

Propanone, 1-(4-methoxy phenyl)- 172a, 174b, 174b, 1053, 3266 ... 

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