✦ LIBER ✦

Synthesis and physical properties of various organic dyes derived from a single core skeleton, 1,2-dihydroindol-3-one

✍ Scribed by Shoji Matsumoto; Daisuke Samata; Motohiro Akazome; Katsuyuki Ogura

Book ID: 104095967
Publisher: Elsevier Science
Year: 2009
Tongue: French
Weight: 240 KB
Volume: 50
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2008.10.098

No coin nor oath required. For personal study only.

✦ Synopsis

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). Emission peaks of the obtained materials covered the 440-640 nm range.

📜 SIMILAR VOLUMES

Synthesis, characterization and spectros

Synthesis, characterization and spectroscopic properties of some new azo disperse dyes derived from 4-hydroxybenzo[h]quinolin-2-(1H)-one as a new synthesized enol type coupling component

✍ E.O. Moradi Rufchahi; A. Ghanadzadeh Gilani 📂 Article 📅 2012 🏛 Elsevier Science 🌐 English ⚖ 554 KB

Preparation of Silica Nanoparticles from

Preparation of Silica Nanoparticles from Organic Laboratory Waste of Silica Gel HF254 and Their Use as a Highly Efficient Catalyst for the One-Pot Synthesis of 2,3-Dihydro-1H-isoindolone Derivatives

✍ Ali Ramazani; Amir Mahyari; Azam Farshadi; Morteza Rouhani 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 German ⚖ 505 KB

## Abstract Reaction of an isocyanide with an iminium ion intermediate, formed by reaction between 6‐formyl‐2,3‐dimethoxybenzoic acid and secondary amines (dibenzyl‐ or benzyl(isopropyl)amine) in the presence of silica nanoparticles (silica NPs, __ca.__ 70 nm) proceeds smoothly at room temperature

Metal nitrosyl complexes of bioinorganic

Metal nitrosyl complexes of bioinorganic, catalytic, and environmental relevance: A novel single-step synthesis of dinitrosylmolybdenum(0) complexes of {Mo(NO)2}6 electron configuration involving Schiff bases derived from 4-acyl-3-methyl-1-phenyl-2-pyrazolin-5-one and 4-aminoantipyrine, directly from molybdate(VI) and their characterization

✍ R.C. Maurya; A. Pandey; J. Chaurasia; H. Martin 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 587 KB

ChemInform Abstract: Preparation of Sili

ChemInform Abstract: Preparation of Silica Nanoparticles from Organic Laboratory Waste of Silica Gel HF254 and Their Use as a Highly Efficient Catalyst for the One-Pot Synthesis of 2,3-Dihydro-1H-isoindolone Derivatives.

✍ Ali Ramazani; Amir Mahyari; Azam Farshadi; Morteza Rouhani 📂 Article 📅 2012 🏛 John Wiley and Sons ⚖ 13 KB 👁 2 views

## Abstract Multicomponent reaction of o‐formylbenzoic acid derivative (I) with secondary amines (III) and isocyanides (II) proceeds smoothly in the presence of silica nanoparticles under neat conditions to give dihydroisoindolone derivatives (IV) in good yields.