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Abstract γ-Ketoesters are obtained in excellent yields by means of double bond migration of 2,5-dimethoxy-2,5-dihydrofurans mediated by a ruthenium hydride complex, HRuCl(PPh3)3(C6H5CH3) or HRuCl(CO)(PPh3)3′ and subsequent hydrolysis in acidic media.
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Hirai et al. (1982) studied this question.
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