𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis, structure, crystalline-state photochromism and photoinduced behavior of [2,2′-bi-1H-indene]-1,1′-dione-3,3′-dihydroxy-3,3′-diisobutyl

✍ Scribed by Xu Li; Zhiyi Song; Yong Chen; Jiben Meng

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
166 KB
Volume
748
Category
Article
ISSN
0022-2860

No coin nor oath required. For personal study only.

✦ Synopsis

A novel photochromic compound, [2,2 0 -bi-1H-indene]-1,1 0 -dione-3,3 0 -dihydroxy-3,3 0 -diisobutyl (I), was synthesized and its crystal structure was determined. The photochromic and photoinduced properties of the compound were studied. The relationship of the structure with the properties was also observed. The results showed that compound I exhibited reversible photochromism, changing from normal yellow color crystal A to the active dark brown color crystal B after irradiation with UV or sunlight. And at the same time a stable organic radical was generated, which was detected by electron spin resonance spectroscopy. Reversible radical formations were possible mechanisms of the crystalline photochromism.

📜 SIMILAR VOLUMES

An unexpected participation of oxygen in
An unexpected participation of oxygen in a novel synthesis of [2,2′-bi-1H-indene]-3,3′-dialkyl-3,3′-dihydroxy-1,1′-diones
✍ Lili Xu; Huaming Huang; Zhiyi Song; Jiben Meng; Teruo Matsuura 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 236 KB

This paper describes, for the first time, a short synthetic procedure for [2,2%-bi-1H-indene]-3,3%-dialkyl-3,3%-dihydroxy-1,1%-diones (1a-f). The key feature of this synthetic method lies in the participation of oxygen when the intermediate arises from the nucleophilic addition of alkylmagnesium bro

Synthesis of spiro[2H-indole-2,1′-1H-iso
Synthesis of spiro[2H-indole-2,1′-1H-isoindole]-3,3′-diones, spiro[1H-isobenzofuran-1,2′-2H-indole]-3,3′-diones and spiro[benzofuran-2,1′-isobenzofuran]-3,3′-diones via transannular reactions of eight membered ring intermediates
✍ James L. Bullington; John H. Dodd 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 519 KB

## Abstract An auto oxidation‐rearrangement product 4 was isolated from a high dilution reaction of ninhydrin with 3,4,5‐trimethoxyaniline in water. A general synthesis of this compound and its derivatives 4–6 was devised by oxidation of tetrahydroindeno[1,2‐__b__]indol‐10‐ones 1–3 with sodium peri