共 5 条
STEREOCHEMISTRY OF TETRACYANOETHYLENE CYCLOADDITIONS TO THIOENOL ETHERS
被引:23
作者:
HUISGEN, R
GRAF, H
机构:
[1] Institut fur Organische Chemie, Universitat Minchen, 8000, Minchen, West Germany
关键词:
D O I:
10.1021/jo01328a065
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
In the cyclobutane formation from ethyl cis-propenyl sulfide and cis-1-butenyl ethyl sulfide with tetracyanoethylene, the nonstereospecific portion of the cycloadduct rises with increasing solvent polarity in accordance with a zwitterionic intermediate, whereas cis → trans isomerization of the excess of thioenol ether signals the reversibility of zwitterion formation. © 1979, American Chemical Society. All rights reserved.
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页码:2595 / 2596
页数:2
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