Abstract
The attempted demethylation of 4-methoxy-β-ionone13) δ 1.00, 1.03 (2s,6,C(CH3)2), 1.3–1.7 (m,4,CH2), 1.77 (s,3,5CH3), 2.27 (s,3H,9CH3) 3.36 (s,3,OCH3), 3.48 (m,1,4H), 6.10 (d,1,8H, J=16.5Hz), 7.16 (d,1,7H, J=16.5Hz).1) with iodotrimethylsilane gave the unexpected product, β-ionone (2). This reagent may prove useful in the cleavage of allylic ethers conjugated to ketones.
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