Remarkable alkali cation template effect in 1,5-bridged calix[8]arenes

被引：29
作者：
Consoli, GML
Cunsolo, F
Geraci, C
Neri, P
机构：
[1] Univ Salerno, Dipartimento Chim, I-84081 Baronissi, SA, Italy
[2] CNR, Ist Studio Sostanze Nat Interesse Alimentare & Ch, I-95028 Valverde, CT, Italy
来源：
ORGANIC LETTERS | 2001年 / 3卷 / 11期
关键词：
D O I：
10.1021/ol015766y
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
[GRAPHICS] Treatment of 1,5-bridged calix[8]arenes 2-4 with alkali metal carbonates produces salts in which an included cation acts as a conformational template, This induces the folding of calix[8]arene skeleton in a conformation in which the triads of contiguous OH-bearing rings adopt a 3/4-cone conformation with all hydroxyls converging toward the same center, The template effect requires the presence of short bridges (ethylene, tetramethylene, diethylene glycol) and became stronger by increasing the cation dimension up to that of Cs+.
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页码：1605 / 1608
页数：4
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