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Microwave-assisted Claisen Rearrangement of 1-Allyloxy-4-hydroxybenzene in the Presence of Metal Salt

[ Vol. 8 , Issue. 1 ]

Author(s):

Fumiyoshi Ozaki and Yutaka Okada*   Pages 3 - 6 ( 4 )

Abstract:


Microwave-assisted Claisen rearrangement of allyloxybenzene with a hydroxyl group was conducted in the presence of metal salts. The rearrangement was promoted in the presence of an alkali metal salt, because the reaction substrate was converted into a phenoxide-type ion, which can efficiently absorb microwaves. In contrast, a Lewis acid was strongly coordinated to the ethereal oxygen, and this structure could also absorb microwaves efficiently.

Keywords:

Microwave irradiation effect, Claisen rearrangement, metal salt, allylarenes, electron density, ethereal oxygen, phenoxide ion.

Affiliation:

Department of Applied Chemistry, Ritsumeikan University, Kusatsu, Department of Applied Chemistry, Ritsumeikan University, Kusatsu



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