cas 69556-70-3, 4-METHOXY-2(5H)-FURANONE | Articles data

Articles about 69556-70-3Total 9 be found

Pseudoesters and derivatives xxxvi. reactions of enolates of 5-ethylthiofuran-2(5h)-ones with aromatic aldehydes: A synthesis of losigamone
The furanones (3a) and (3b), key intermediates in our approach to losigamone (12), have been prepared by reaction of 2-chlorobenzaldehyde with the enolates (2A) and (2B) of the corresponding tetronic acid derivatives (2a) and (2b). The reductiv
Rosario Martin,Victoria Martin,De Guere?u, Ana Martinez,Luis Ortego
p. 191 - 198
(1996)
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Lewis Acid Mediated Addition of Indoles and Alcohols to Tetronic Acid and Tetramic Acids
The electrophilic substitution of indoles with tetronic acid and N-acetyltetramic acid mediated by BF3·OEt2 was investigated. This strategy allowed for the preparation of nine indole-substituted furan-2-ones (indolyl-γ-lactones) and 3-pyrrolin-2-ones (indolyl-γ-lactams) and is more straightforward than previously reported synthetic methods. During the course of our investigation, we also discovered a facile synthesis of tetronates and a tetramate via a BF3-mediated addition of alcohols to tetronic acid and N-acetyltetramic acid, respectively.
Banales Mejia, Fernando,Lafferty, Megan M.,Melvin, Sophia J.,Truax, Nathanyal J.,Kean, Maeve H.,Pelkey, Erin T.
p. 260 - 264
(2017)
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Highly efficient 4-O-alkylations of tetronic acids involving oxyphosphonium intermediates
4-Alkoxy-5H-furan-2-ones were prepared in fair to high yields by regioselective 4-O-alkylation of tetronic acids with stoichiometric amounts of primary and secondary alcohols. This approach involves the intermediacy of (5-oxo-2,5-dihydrofuran-3-yloxy) phosphonium trifluoromethanesulfonates, which were generated in situ on reaction of tetronic acids with triphenylphosphonium anhydride trifluoromethanesulfonate (Hendrickson's reagent).
Paintner, Franz F.,Allmendinger, Lars,Bauschke, Gerd
p. 83 - 86
(2007/10/03)

Methyl (E)-4-chloro-3-methoxy-2-butenoate: An extremely versatile four carbon building block
Methyl (E)-4-chloro-3-methoxy-2-butenoate (3a) is inexpensively prepared from methyl 4-chloroacetoacetate using thionyl chloride and methanol on an industrial scale. Many nucleophilic substitution reactions of chloride, which are impossible with the unpro
Duc,McGarrity,Meul,Warm
p. 391 - 394
(2007/10/02)

Synthetic Routs to the Piperolides, Faydenolides, Epoxypiperolides, and Related Compounds
Syntheses of the piperolides, the faydenolides, epoxypiperolide, and related compounds are described. (+/-)-Narthogenin is also efficiently produced.
Pelter, Andrew,Al-Bayati, Redha I. H.,Ayoub, Miqdad T.,Lewis, Wynn,Pardasani, Pushpa,Hansel, Rudolf
p. 717 - 742
(2007/10/02)

Regioselectivity control in metal hydride reductions of substituted maleic anhydrides
A systematic study of reductions of unsymmetrically substituted maleic anhydrides by a variety of metal hydride reagents indicates that the high regioselectivity observed in these reactions is controlled chiefly by electronic factors.
Kayser, Margaret M.,Breau, Livain,Eliev, Sonia,Morand, Peter,Ip, H. S.
p. 104 - 109
(2007/10/02)

Reaction of Methyl Tetronate with some Amines. Synthesis of Substituted 4-Aminobut-2-enolides
A series of substituted 4-aminobut-2-enolide derivatives have been synthesized by reaction of a variety of substituted amines with methyl tetronate.The (1)H and (13)C nmr spectral analysis of all compounds synthesized are given.
Shandala, Mowafak Y.,Ayoub, Mikdad T.,Mohammad, Moyayed J.
p. 1753 - 1754
(2007/10/02)