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All articles of this category 3,4-Dihydro - α-pyrones were prepared in excellent yields with high stereoselectivities by the trityl salt-catalyzed Michael reaction and sequential intramolecular O-acylation of the intermediary silyl enol ethers using a mercury (II) salt (one-pot reaction). 3,4-dihydro - α-pyrone - Michael reaction - lactonization - O-acylation - trityl salt - silyl enol ether
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Kobayashi et al. (1997) studied this question.
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