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Chiral Polymethine Dyes, III. Synthesis and Spectroscopic Properties of an Unsymmetrical, Chiral Monomethine Cyanine Dye with a Thiazolyl and Quinolyl End Group

✍ Scribed by Reichardt, Christian ;Budnik, Ulrich


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
441 KB
Volume
1994
Category
Article
ISSN
0947-3440

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✦ Synopsis


Abstract

The synthesis of the unsymmetrical monomethine cyanine dye 6 in its monochiral (6a, b) and isochiral form (6c), first realized by Götze in 1938, has been significantly improved and its spectroscopic properties have been studied. According to the synthetic pathway, the stereogenic center in dye 6 is delivered by monochiral 1‐phenylethylamine.


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✍ Christian Reichardt; Jörg Stein 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 419 KB 👁 1 views

Starting from the 1Ј,2Ј,3Ј,4Ј,10,11-hexahydroquinines 3a-c dihydroquinine 2a, (+)-quinidine 4a, and (+)-10,11dihydroquinidine 5a. The latter four compounds were (Schemes 1 and 3) and 1Ј,2Ј,3Ј,4Ј,10,11-hexahydroquinidine 6c (Scheme 2), we have synthesized the new chiral, hydrogenated at 70 bar and 70