𝔖 Bobbio Scriptorium
✦   LIBER   ✦

ChemInform Abstract: New Photochromic 1,1,3-Trimethylspiro[benzo[e]indoline-2,3′-[3H]-pyrano [3,2-f]quinoline].

✍ Scribed by S. M. Aldoshin; V. V. Tkachev; K. N. Khalanskii; B. S. Lukyanov; V. I. Minkin; A. N. Utenyshev; Yu. S. Alekseenko; S. O. Bezuglyi


Book ID
115552805
Publisher
John Wiley and Sons
Year
2012
Weight
22 KB
Volume
43
Category
Article
ISSN
0931-7597

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


ChemInform Abstract: Synthesis of 2,3-Di
✍ M. V. VOVK; A. V. BOL'BUT 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 26 KB 👁 1 views

Synthesis of 2,3-Dihydro-3H-pyrano[2,3-f ]-1,3-benzoxazines. -The cyclocondensation of 7-hydroxycoumarins (I) with chlorocarbonylisocyanate (II) represents a facile way to the hitherto unknown angular pyranobenzoxazines (III). -(VOVK, M.

Resonance raman studies of transient spe
✍ Hiroaki Takahashi; Keiichi Yoda; Hiroaki Isaka; Tomoyuki Ohzeki; Yoshiki Sakaino 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 472 KB

Resonance Raman spectra of transient species of 1 ',3',3'-trimethylspiro-[2H-l-benzopyran-2,2'-indoline] in various solvents reveal that at least four transients having merocyanine-like structures are involved in the photochromism of this compound. It is concluded that the transient species in aliph

Synthesis and reactions of 11H-benzo[b]p
✍ Thomas Kappe; Peter Roschger; Birgit Schuiki; Wolfgang Stadlbauer 📂 Article 📅 2003 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 80 KB 👁 1 views

## Abstract 2‐Methyl‐3__H__‐indoles 1 cyclize with two equivalents of ethyl malonate **2** to form 4‐hydroxy‐11__H__‐benzo[__b__]pyrano[3,2‐__f__]indolizin‐2,5‐diones 3, whereas 2‐mefhyl‐2,3‐dihydro‐1__H__‐indoles **9** give under similar conditions regioisomer 8‐hydroxy‐5‐methyl‐4,5‐dihydro‐pyrrol