1,2-Bis(1 H -indol-3-yl)ethane-1,2-dione, an Indole Alkaloid from the Marine Sponge Smenospongia sp.
✍ Scribed by McKay, Matthew J.; Carroll, Anthony R.; Quinn, Ronald J.; Hooper, John N. A.
- Book ID
- 126135632
- Publisher
- American Chemical Society
- Year
- 2002
- Tongue
- English
- Weight
- 38 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0163-3864
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1,2-Bis(1H-indol-2-yl)ethane (9) has been prepared and converted into indolo[2,3-c]carbazole (8) using palladium acetate in refluxing acetic acid. Reaction of 9 with CoF 3 in hot TFA led to isolation of cyclohept[1,2-b:5,4-b H ]bisindole derivatives 11 and 12, which could be elaborated into further
## Abstract Lactone analogues of 3‐substituted oxindoles (=1,3‐dihydro‐2__H__‐indol‐2‐ones) and nonbenzoid oxa‐analogous isoindigoid or nonbenzoid isoindigoid dyes were prepared by the reactions of furan‐2,3‐diones with oxindole and __Lawesson__ reagent (__Schemes 1__ and __3__), respectively. So,