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275. The colour of organic compounds. Part VIII. A comparison of isomeric dyes from 3 : 7a-diazaindan-1-one and -2-one

โœ Scribed by Knott, Edward B.


Book ID
118157230
Publisher
The Royal Society of Chemistry
Year
1956
Weight
498 KB
Category
Article
ISSN
0368-1769

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Synthesis and physical properties of var
โœ Shoji Matsumoto; Daisuke Samata; Motohiro Akazome; Katsuyuki Ogura ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 240 KB

Various organic dyes were synthesized from 1,2-dihydroindol-3-one analogue via Robinson ring annulation, which proceeded efficiently using DBU as a base to give the p-expanded compounds. These compounds exhibited longer Stokes shifts (over 100 nm) than the 1,2-dihydroindol-3-ones (50-80 nm). Emissio