Ionic liquid promoted expeditious synthesis of flavones

Bhosale, Rajesh S.; Sarda, S. R.; Giram, R. P.; Raut, Dnyaneshwar S.; Parwe, Sharad P.; Ardhapure, S. S.; Pawar, Rajendra P.

doi:10.1007/bf03246530

Cited by 20 publications

(1 citation statement)

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“…This method has advantages such as fast reaction rate, simple and easy procedure, excellent yields and mild reaction conditions. The ionic liquid was recovered and reused many times with no loss in productivity [253][254][255][256][257] [144,164] (Scheme 27).…”

Section: Synthesis Of Six-membered O-polyheterocyclesmentioning

confidence: 99%

Ionic liquid assisted synthesis of six-membered oxygen heterocycles

Kaur

2019

SN Appl. Sci.

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Due to special properties of ionic liquids (ILs) like their wide liquid range, good solvating ability, negligible vapour pressure, non-inflammability, environment friendly medium, high thermal stability, easy recycling and rate promoters etc. they are used in organic synthesis. The investigation for replacement of organic solvents in organic synthesis is a growing area of interest due to increasing environmental issues. Therefore, ILs have attracted the attention of chemists and act as catalyst and reaction medium in organic reaction with high activity. There is no doubt that ILs have become a major subject of study for modern chemistry. In comparison to traditional processes the use of ILs resulted in improved, complimentary or alternative selectivities in organic synthesis. The aim of present review is to focus on the applications of ILs for the synthesis of six-membered oxygen heterocycles (pyrans, chromenes, coumarins and dioxanes). Scheme 8 Synthesis of furans and pyran Scheme 27 Synthesis of 4H-benzo[b]pyrans Scheme 28 Synthesis of biscoumarins Scheme 29 Synthesis of 4-methyl-4,5-diphenyl-1,3-dioxane

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