an efficient catalyst for a double Friedel–Crafts reaction of various heteroarenes, i.e. 2-methylfuran, 2-ethylfuran, 2-methylthiophene, pyrrole, N-methylpyrrole and indole, using aldehydes as alkylating agents under “open-flask” conditions with toluene or water as the reaction media. In the presence of 10 mol% iodine in toluene at room temperature, both aliphatic and aromatic aldehydes reacted smoothly
Riad, A.; Mouloungui, Z.; Delmas, M., Synthetic Communications, 1989, vol. 19, # 18, p. 3169 - 3174
作者:Riad, A.、Mouloungui, Z.、Delmas, M.、Gaset, A.
DOI:——
日期:——
RIAD, A.;MOULOUNGUI, Z.;DELMAS, M.;GASET, A., SYNTH. COMMUN., 19,(1989) N8, C. 3169-3173
作者:RIAD, A.、MOULOUNGUI, Z.、DELMAS, M.、GASET, A.
DOI:——
日期:——
A two-phase system for the clean and high yield synthesis of furylmethane derivatives over –SO<sub>3</sub>H functionalized ionic liquids
作者:S. H. Shinde、C. V. Rode
DOI:10.1039/c7gc01654a
日期:——
respective ionic liquids. Among the several preapered ionic liquids, strong acidic imidazolium based butylsulfonic acid (6) showed the best activity with a maximum of 84% yield of condensation product. This strategy offers significantly highyield production of condensation products of furan and furfural as compared to the traditional mineral acid route. The activity and stability of the -SO3H functionalized