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H-1 and C-13 NMR assignments for new heterocyclic TAM leuco dyes, (2Z,2 ' E)-2,2 '-(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline) derivatives. Part II
- Issue Date
- 9월-2008
- Publisher
- WILEY
- Keywords
- NMR; 1H NMR; 13C NMR; 1D NMR; 2D NMR; (2Z,2' E)-2,2' -(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline); (2Z,2' E)-2,2' -(2-phenyl propane-1,3-diylidene) bis(5-chloro-1,3,3-trimethylindoline); three-bladed propeller conformations
- Citation
- MAGNETIC RESONANCE IN CHEMISTRY, v.46, no.9, pp.872 - 877
- Indexed
- SCIE
SCOPUS
- Journal Title
- MAGNETIC RESONANCE IN CHEMISTRY
- Volume
- 46
- Number
- 9
- Start Page
- 872
- End Page
- 877
- ISSN
- 0749-1581
- Abstract
- The H-1 and C-13 NMR spectra of the novel heterocyclic Leuco-TAM dyes, (2Z,2'E)-2,2'-(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline) derivatives 1-4 as precursors of triarylmethane (TAM)+ (Malachite Green FB-analog) dyes were completely assigned by 1D and 2D NMR experiments, including DEPT, COSY, HSQC, HMBC, and NOESY. Especially, the diastereotopic gem-dimethyl protons at the C3 and C3' positions of the FB rings were definitively assigned. The (Z,E) isomers adopt the energetically favored three-bladed propeller conformation in solution. Copyright (c) 2008 John Wiley & Sons, Ltd.
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