TANDEM CYCLIZATION OF ENYNYL AND DIYNYL ALKYLLITHIUMS

被引:7
作者
BAILEY, WF [1 ]
OVASKA, TV [1 ]
机构
[1] CONNECTICUT COLL, DEPT CHEM, NEW LONDON, CT 06320 USA
关键词
D O I
10.1246/cl.1993.819
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Undec-10-en-5-ynyllithium, generated from the corresponding iodide by low-temperature lithium - iodine exchange, undergoes two sequential 5-exo cyclizations when warmed to room temperature to afford 2-methyl-1-cyclopentylidenecyclopentane in 85% yield. Attempted tandem cyclization of an analogous diacetylenic alkyllithium was less successful.
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页码:819 / 820
页数:2
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