Diastereoselective synthesis of polyfunctional compounds based on the tandem sequence of threeAd E reactions using cyclic vinyl ethers as first alkene components
1990
The reaction of the bicyclic thiophanium ions salts, generated by the sequential interaction ofp-TolSCI with dihydropyran or 1-methoxycycloalkene and then with an acyclic alkyl vinyl ether in the presence of a Lewis acid and with silicon- or tin-capped π-donors, proceeds with high diastereoselectivity at all newly created chiral centers.
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