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Ethylacetoacetate

P-Ketoester Chelates. p-Ketoesters react in a fashion similar to the p-diketones. TYZOR DC [27858-32-8] is the hght-yeUow Hquid from TYZOR TPT and two moles of ethyl acetoacetate (eaa) after removal of the isopropyl alcohol. TYZOR BEAT, the bis-ethylacetoacetate [20753-28-0] derived from the tetra- -butyl titanate, and TYZOR IBAY [83877-91-2] the isobutoxy analogue, perform similarly to TYZOR DC. Both, however, have better cold-storage stabiHty. [Pg.146]

Knorr reported the first pyrazole derivative in 1883. The reaction of phenyl hydrazine and ethylacetoacetate resulted in a novel stmcture identified in 1887 as l-phenyl-3-methy 1-5-pyrazolone 9. His interest in antipyretic compounds led him to test these derivatives for antipyretic activity which led to the discovery of antipyrine 10. He introduced the name pyrazole for these compounds to denote that the nucleus was derived from the pyrrole by replacement of a carbon with a nitrogen. He subsequnently prepared many pyrazole analogs, particularly compounds derived from the readily available phenyl hydrazine. The unsubstituted pyrazole wasn t prepared until 1889 by decarboxylation of liT-pyrazole-3,4,5-tricarboxylic acid. ... [Pg.292]

Knorr showed that aniline could be condensed with ethylacetoacetate when heated to provide the acetoanilide (6). Conrad and Limpach established that further heating... [Pg.386]

The mercaptals obtained by the acid catalyzed reaction of J3-ketoesters, e.g., ethyl acetoacetate, with methyl thioglycolate (73) undergo the Dieckmann cyclization with alcoholic potassium hydroxide at lower temperatures to give ethyl 3-hydroxy-5-methyl-2-thiophenecarboxylate (74) in 75% yield. ° Besides ethyl acetoacetate, ethyl a-ethylacetoacetate, ethyl benzoyl acetate, and ethyl cyclopentanonecarboxylate were also used in this reaction/ It is claimed that /8-diketones, hydroxy- or alkoxy-methyleneketones, or /8-ketoaldehyde acetals also can be used in this reaction. From acetylacetone and thioglycolic acid, 3,5-dimethyl-2-thiophenecarboxyl-ic acid is obtained. ... [Pg.30]

Ethylacetoacetic ester (ethyl), 7, 62 Ethyl Acetone Dicarboxylate, 5,... [Pg.134]

Various thiourea ligands have been used in the synthesis of mixed ligand complexes. A series of complexes [NiQ2L2] (HQ = ethylacetoacetate, L = thiourea, allyl-, benzoyl-, methyl-, diphenyl-thiourea) have been prepared. The complexes are all paramagnetic (/i = 3.02-3.27/iB) and have been assigned tra 5-octahedral structures.1014... [Pg.337]

Urine ( -aminolevuli nic acid) Dilution of sample reaction with ethylacetoacetate and ethylacetate to form -amino-levulinic acid-pyrrole reaction with Erhlich s reagent Spectrophotometry No data No data Tomokuni and Ichiba 1988... [Pg.446]

Transesterification of ethylacetoacetate with various alcohols (ROH) over TS-1... [Pg.133]

Comparative activity ofTS-1, Ti-MCM-41 and amorphous Ti02-Si02 in transesterification of (a) ethylacetoacetate with benzyl alcohol and allylalcohol and (b) diethylmalonate with allylalcohol... [Pg.136]

Muranishi, S., Absorption enhancers, Crit. Rev. Ther. Drug Carrier Syst., 7 1-33 (1990). Nishihata, T., Kamikawa, K., Takahata, H., and Kamada, A., Enhanced intestinal absorption of amino aeids and amino acid-like drug by possible formulation of anamine in administered solution by the presenee of ethylacetoacetate, J. Pharmacobiodyn., 7 143-150 (1984). [Pg.57]

The Biginelli reaction is a cyclocondensation between ethylacetoacetate, an arylal-dehyde and urea derivatives to obtain dihydropyrimidines. Transfer this reaction to the solid-phase chemistry, allow the preparation of libraries of this kind of products (Scheme 3.18) [288]. [Pg.173]

A new approach to synthesize racemic analogues of acylic 1,5-dimethyl-branched insect pheromones based on monoalkylation of ethylacetoacetate with... [Pg.323]

Michael addition of ethylacetoacetate 171 to nitroalkenes, for example, p-nitrostyrene 172 also proceeded with excellent enantioselectivities. Evans reported the Cu(II)-bis(oxazoline) catalyzed Michael addition of methylthio enolsUane 174 to the fumarate derivative 80c to provide 175 in 98% ee as shown in Figure 9.52fo. ... [Pg.568]

Ethylacetoacetic Acid Diazide, Ethyl-a,a-bistri-ozoacetoacetate or Diazidoethylacetoacetate,... [Pg.74]

Ethylacetoacetic acid and derivs 6 E200—E201 ethylacetoacetic acid diazide 6 E201... [Pg.603]

The procedure used in the ketone decomposition of ethyl H-bulylacetoacetate is adapted from that used by Michael and Wolgast 4 for ethyl ethylacetoacetate. [Pg.62]

See other pages where Ethylacetoacetate is mentioned: [Pg.688]    [Pg.688]    [Pg.895]    [Pg.143]    [Pg.112]    [Pg.386]    [Pg.71]    [Pg.134]    [Pg.688]    [Pg.688]    [Pg.339]    [Pg.134]    [Pg.136]    [Pg.952]    [Pg.190]    [Pg.101]    [Pg.13]    [Pg.39]    [Pg.66]    [Pg.94]    [Pg.121]    [Pg.159]    [Pg.185]    [Pg.39]    [Pg.103]    [Pg.223]    [Pg.221]    [Pg.340]    [Pg.688]    [Pg.688]    [Pg.978]   
See also in sourсe #XX -- [ Pg.111 , Pg.114 ]

See also in sourсe #XX -- [ Pg.111 , Pg.114 ]

See also in sourсe #XX -- [ Pg.11 ]

See also in sourсe #XX -- [ Pg.119 , Pg.120 , Pg.210 ]

See also in sourсe #XX -- [ Pg.222 ]



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Ethyl ethylacetoacetate

Ethylacetoacetic ester

Methyl ethylacetoacetate

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