## Abstract Unambiguous and complete assignments of ^1^H and ^13^C NMR chemical shifts for 15 limonoids, eight of them found in natural sources and seven other synthetic derivatives, are presented. The assignments are based on 2D shift‐correlated [^1^H,^1^H‐COSY, ^1^H,^13^C‐gHSQC‐^1^__J__(C,H), ^1^
Structure elucidation of the dye Acid Red 131: complete 1H, 13C and 15N NMR data assignment
✍ Scribed by Elisabetta Schievano; Ileana Menegazzo; Ester Marotta; Stefano Mammi
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 222 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2765
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✦ Synopsis
Abstract
The chemistry of dyes and pigments is relevant to the textile industry, because of the importance to establish the best conditions for the finishing process and to understand the interactions among various compounds to yield the correct hue and nuances. For this reason, the molecular structure of a monoazo acid dye, C.I. Acid Red 131, was elucidated and characterized by homo‐ and hetero‐nuclear NMR, MS, IR and UV spectroscopy techniques. Copyright © 2011 John Wiley & Sons, Ltd.
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