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Synthesis and Reactivity of a New Heptacarbon Chain Carboxonium Salt − Access to a New Class of Streptocyanine Dyes
Author(s) -
Izquierdo Albert,
Payrastre Corinne,
Gornitzka Heinz,
Madaule Yves
Publication year - 2003
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200300176
Subject(s) - chemistry , salt (chemistry) , hydrazone , chain (unit) , reactivity (psychology) , combinatorial chemistry , polymer chemistry , organic chemistry , medicine , physics , alternative medicine , pathology , astronomy
A new highly reactive heptacarbon chain carboxonium salt 1 was synthesized. It leads, by action of various amines and hydrazone, to a new class of symmetrical heptacarbon chain streptocyanine dyes 2 − 6 . A hemicarboxonium salt 7 , which leads to a dissymmetrical streptocyanine, was also obtained. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)