Ethyl acetatc

BOC-Amino acids. The reagent, in combination with 1.5 equivalent of Irlelhylmnine, converts amino acids into the BOC derivative at 25° in 65 100% yield. The by-product, 2-hydroxyimino-2-phenylacetonilrile, is easily removed by extraction into an organic solvent (ethyl acetatc-hcxanc).1... 

When isomeric mixtures are formed they can usually be separated quite readily by column or radial chromatography, for example mixtures of 4- and 5-halogeno-1-methylimidazoles separate on an alumina column eluted with. 2% ethyl acetate in dichloromethane 1,4- and 1,5-dimethylimidazolcs use methanol-ethyl acetatc-dichloromethane-hexanes (1 4 5 40) and l-methyl-4-and -5-nitroimidazolcs are separated by 4% methanol in dichloromethane. Further purification is achieved by vacuum distillation in a Kugelrohr apparatus 21. ... 

Ethyl acetatc-methanol-25% aq. NH,(33 10 10). MeOH-EtOH-iso-amyl alcohol-aq. 25% NH< (15 10 5 3)... 

C11H22O2S 123450-78-2) see Troglitazone (S)-2,3,5-trimethyl-6-[l-[(l-methylethyl)thio]-2-(2,2,4-tri-methyl-l,3-dioxolan-4-yl)ethyl]-l,4-benzenediol 4-acetatc... 

Together with ethyl c -3.3-dimethyl-2-oxooctahydroindene-l-acetatc (45%). 

Chlorofluorocarbcne is generally derived from the readily available dichlorofluorometh-ane, although it can be generated from a range of precursors, e.g. trichlorofluorometh-ane," " 1,3-dichIorotclrafluoroacetone, methyl dichlorofluoroacetatc, ethyl dichlorofluoro-acetatc, and (dichlorofluoromcthyl)phenylmercury. 

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