Highly cis- or trans-selective oxygen to carbon rearrangements of anomerically linked 6-substituted tetrahydropyranyl enol ethers

被引:18
作者
Dixon, DJ [1 ]
Ley, SV [1 ]
Tate, EW [1 ]
机构
[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England
来源
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 | 1999年 / 19期
关键词
D O I
10.1039/a904891j
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Low temperature Lewis acid catalysed oxygen to carbon rearrangements of anomerically linked 6-substituted tetrahydropyranyl enol ethers lead to the corresponding trans-ketones in a highly diastereoselective manner, whereas at higher temperatures the cis-ketones are formed with a high degree of selectivity under thermodynamic control.
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页码:2665 / 2667
页数:3
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