Ionic liquid-supported synthesis reagents

Fig. 36 Synthesis of a polysubstituted pyran on ionic liquid support. Reagents and conditions a ethyl acetoacetate, MW 200 W, reflux, 10 min b arylidenemalononitriles, pyridine, MeCN, MW 200 W, reflux, 15-20 min c NaOMe, MeOH, rt, 6h...

Although the iodoarene can often be recovered and used in the synthesis of At2IX [53], this process could be facilitated by the use of solid supported diaryliodonium salts. Polymer-bound reagents have, however, met with limited success in applications, possibly because of chemoselectivity problems resulting in the nucleophiles being transferred to the polymer backbone [42,54], Ionic liquid-supported Ar2lX were recently synthesized and applied in chemoselective O-arylations without the need for chromatography [55]. 

Organic Synthesis Using Microwaves and Supported Reagents 6.2.7.6 Solvent-free Synthesis of Ionic Liquids... 

Keywords Supported catalysts Supported reagents Supported synthesis Task specific ionic liquids Task specific onium salts... 

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