Tandem oxidative isocyanide-based cycloaddition reactions in the presence of MIL-101(Cr) as a reusable solid catalyst
作者:Ahmad Shaabani、Heshmatollah Sepahvand、Mostafa M. Amini、Alireza Hashemzadeh、Mahmoud Borjian Boroujeni、Elham Badali
DOI:10.1016/j.tet.2018.02.046
日期:2018.4
The tandem oxidative three-component synthesis of two types of the heterocycles such as furans and imidazopyridines, via isocyanides [1+4] cycloadditionreactions in the presence of MIL-101(Cr) under aerobic conditions are reported. When the 4-toluenesulfonylmethyl isocyanide was used, an unexpected [3+2] cycloadditionreaction of isocyanides with aldehydes accomplished and dihydrophenyloxazoles and
The three-component condensation of aldehyde, N,N'-dimethylbarbituric acid and alkyl or aryl isocyanide afforded the corresponding furo[2,3-d]pyrimidine-2,4(1H,3H)-diones in 1-butyl-3-methylimidazolium bromide as an ionic liquid in high yields at room temperature within several minutes.
Microwave‐Assisted Three‐Component Condensation on Montmorillonite K10: Solvent‐Free Synthesis of Furopyrimidines, Furocoumarins, and Furopyranones
Rapid and efficient one-pot three-component condensation synthesis of furopyrimidines, furocoumarins, and furopyranones are described which occur in the presence of montmorillonite K10 using microwave irradiation under solvent-free conditions.
10.3184/174751911x556765
作者:Shaabani, Ahamd、Teimouri, Mohammad Bagher、Afgheh, Mohammad、Eskandari, Mehrdad