A New Route for the Synthesis of 3-Methoxythiophenes
摘要:
A new synthesis of 4-substituted, 5-substituted and 4,5-disubstituted 3-methoxythiophenes is reported. The reaction takes place in three steps in nealy quantitative yields starting from methyl 3-hydroxythiophene-2-carboxylates.
Chemical and spectroscopic properties of the 3-hydroxythiophene [thiophen-3(2H)-one] system
作者:Gordon A. Hunter、Hamish McNab
DOI:10.1039/c0nj00320d
日期:——
3-Hydroxythiophene 1 spontaneously dimerises to 4,5-dihydro-5-(3-hydroxythien-2-yl)thiophen-3(2H)-one 14. 3-Hydroxythiophenes 1E and 4–10E exist in solvent-dependent equilibrium with their thiophen-3(2H)-one 1K and 4–10K tautomers; the amount of hydroxy tautomer is greater than in the case of the corresponding 3-hydroxypyrroles. 3-Hydroxythiophenes are much less reactive to electrophiles than corresponding
A New Route for the Synthesis of 3-Methoxythiophenes
作者:Jaime Lissavetzky、Ignacio Manzanares
DOI:10.3987/com-96-7512
日期:——
A new synthesis of 4-substituted, 5-substituted and 4,5-disubstituted 3-methoxythiophenes is reported. The reaction takes place in three steps in nealy quantitative yields starting from methyl 3-hydroxythiophene-2-carboxylates.
Diels-Alder Reaction of Methoxythiophenes: A New One-Pot Synthesis of Dimethyl Phthalates
作者:C. Corral、J. Lissavetzky、I. Manzanares
DOI:10.1055/s-1997-1493
日期:1997.1
A series of dimethyl phthalates have been prepared from methoxythiophenes and dimethyl acetylenedicarbocylate (DMAD) in xylene. When the reaction is carried out in acetic acid, thienylfumarates are obtained.