1,4-di(1,2-di-tert-butyl-2-phenylethenyl)benzene and related twist-twist Pi conjugated stilbene (PPV) systems

被引：5
|
作者：
Gano, JE [1 ]
Kirschbaum, K [1 ]
Luzik, ED [1 ]
Sekher, P [1 ]
机构：
[1] Univ Toledo, Dept Chem, Bowman Oddy Labs, Toledo, OH 43606 USA
来源：
TETRAHEDRON LETTERS | 1998年 / 39卷 / 37期
关键词：
D O I：
10.1016/S0040-4039(98)01430-0
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Twist-twist, pi conjugated, TTPC, systems are described. The twisted stilbene motif represented by 2,2,5,5-tetramethyl-3,4-diphenylhex-3-ene is extended to systems with five and seven perpendicular pi systems. UV spectra show extension of the chain imparts a regular red shift to the prominent pi --> pi* transition. The shift is attenuated compared to planar pi conjugated systems. Extended TTPC systems occur as mixtures of atropisomers with very similar energies. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：6641 / 6644
页数：4
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