Tandem Claisen rearrangement/Diels-Alder reaction in ionic liquid / 中国药科大学学报

Aim: The tandem Claisen rearrangement/Diels-Alder reaction in ionic liquid was carried out to find better changes for the conversion. Methods: The synthesis started with replaced benzoic acid via acylation, cycli-zation, demethylation, allylation and then tandem Claisen rearrangement/Diels-Alder reaction in trational solvent and ionic liquid separately. Results: BmimBF_4 raised the yield of the target compound and shortened the reaction time compared with the traditional solvent Conclusion: BmimBF_4 can promote the tandem Claisen rearrange-ment/Diels-Alder reaction.