The synthesis of benz-, naphth-, and anth-annelated dihydropyrenes as aids to measuring aromaticity by NMR

被引:30
作者
Mitchell, RH [1 ]
Ward, TR [1 ]
机构
[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada
关键词
furan; annulene; Diels-Alder; aryne; resonance energy;
D O I
10.1016/S0040-4020(01)00233-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Benzo[e]-, naphtho[e]- and anthro[e]-fused 2,7-di-t-butyl-trans-10b,10c-dimethyldihydropyrenes are synthesized via an 'arynefuran' Diels-Alder reaction and the series used to establish a relative aromaticity scale for estimating resonance energies (bond localization energies) using NMR chemical shift data of the internal methyl protons of the dihydropyrenes. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3689 / 3695
页数:7
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