Formation of Cyclic Ketals from Hydroxyalkyl Enol Ethers, a stereoelectronically controlled endo??trig??cyclization process
P Deslongchamps, YL Dory, S Li
Index: Deslongchamps, Pierre; Dory, Yves L.; Li, Shigui Helvetica Chimica Acta, 1996 , vol. 79, # 1 p. 41 - 50
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Citation Number: 11
Abstract
Abstract Acid-catalyzed cyclic ketal formation vs. hydrolysis of a series of hydroxyalkyl cyclic enol ethers in the presence of 1 equiv. of H 2 O, and acid-catalyzed cyclic-ketal formation (same ketals as above) vs. methanolysis of a series of mixed pent-4-enyl hydroxyalkyl ketals with N-bromosuccinimide in the presence of 4 equiv. of MeOH led to the same result: the intramolecular cyclization processes occur at similar rates as the intermolecular H 2 O or ...
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