SOLID-STATE STRUCTURE OF A LARGE RING COMPOUND IN SOLUTION - STRUCTURE OF TETRAMETHYL[4.4]PARACYCLOPHANEDIONE

被引：5
|
作者：
FUKAZAWA, Y
KITAYAMA, H
USUI, S
机构：
[1] Department of Chemistry, Hiroshima University, Hiroshima
来源：
TETRAHEDRON LETTERS | 1990年 / 31卷 / 46期
关键词：
D O I：
10.1016/S0040-4039(00)97148-X
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Conformational analysis of 3,3,12,12-tetramethyl[4.4]paracyclophane-2,13-dione using X-ray diffraction, molecular mechanics calculations, and variable-temperature nmr spectra is presented. An interesting example is shown in which a simple dissolution of a crystalline compound into pre-cooled solvent can give nmr signals due to the single conformer found in its crystalline state. However, cooling the solution prepared at room temperature gave complicated signals due to multi-conformers of the compound. © 1990.
引用
收藏
页码：6689 / 6692
页数：4
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