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Synthesis of 1, 3 -dimethyl-3-phenylspiro [indoline —2,2′-(2′H-l-benzopyran)]s and an investigation of the electronic absorption spectra of their merocyanine forms

✍ Scribed by M. A. Gal'bershtam; N. P. Samoilova


Book ID
112328631
Publisher
Springer US
Year
1973
Tongue
English
Weight
239 KB
Volume
9
Category
Article
ISSN
0009-3122

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Thermo- and photochromic dyes: Spiro(ind
✍ Sam-Rok Keum; Ki-Bong Lee; Peter M. Kazmaier; Richard A. Manderville; Erwin Bunc 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 344 KB

## Abstract The proton NMR assignments for a series of 12 thermo‐ and photochromic 1,3,3‐trimethylspiro(indoline‐2,2′‐benzopyrans) dyes is reported. All of the protons in the dye molecule were assigned through a combination of homonuclear decoupling experiments and correlation spectroscopy. The rel