Facile preparative redox chemistry of bis(4-dialkylaminophenyl)squaraine dyes

被引：8

作者：

Griffiths, J ^{[1
]}

Park, S ^{[1
]}

机构：

[1] Univ Leeds, Dept Colour Chem, Leeds LS2 9JT, W Yorkshire, England

来源：

TETRAHEDRON LETTERS | 2002年 / 43卷 / 43期

关键词：

squaraine dye; leuco-squaraine; redox reactions; cyclobutenone;

D O I：

10.1016/S0040-4039(02)01857-9

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Bis(4-dialkylaminophenyl)squaraine dyes are readily reduced in solution by borohydride to give alkali soluble leuco compounds, which exist in the 3-hydroxy-2,4-(4-dialkylaminophenyl)cyclobutenone tautomeric form. The leuco dyes can be oxidised rapidly back to the squaraine dye, thus providing a means of temporarily solubilising the squaraine dye in water. The leuco compounds undergo Substitution reactions typical of vinylogous carboxylic acids. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：7669 / 7671

页数：3

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