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[摘要]：A tandem reaction of new type Baylis-Hillman adducts 1 was prompted by ionic liquid [Hmim]HSO4/NaNO3 system and the unexpected products 6-aryl-2H-pyran-3-carboxylates 2 and imidazolium salts 3 were efficiently formed via the rearrangement and substitution reaction. While mediated by [Emim]HSO4/NaNO3 system, the key intermediates 4 were isolated. A plausible mechanism for the transformation was given. |
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