Intramolecular Diels-Alder Reactions of 4H-Furo[3,4-b]indoles. New Syntheses of Benzo[a]carbazoles and Benzo[c]carbazoles
✍ Scribed by Gribble, Gordon W.; Silva, Richard A.; Saulnier, Mark G.
- Book ID
- 126811155
- Publisher
- Taylor and Francis Group
- Year
- 1999
- Tongue
- English
- Weight
- 752 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0039-7911
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📜 SIMILAR VOLUMES
## Abstract 3‐Indolylalkanoic acids 2 react with benzoic acid anhydride under catalysis of Et~2~O ‐ ZnCl~2~ and mild conditions to furnish the 1‐phenyl‐substituted pyrano[3,4‐__b__]indol‐3‐ones 1c, 1d, and 3a, 3b. Products 1c, 1d, and 3b may be converted into the novel functionalized carbazoles 4 a
## Abstract Benzo[b]thieno[2,3‐a]pyrrolo[3,4‐c]carbazoles and benzo[b]furano[2,3‐a]pyrrolo[3,4‐c]carbazoles were prepared from 2‐(2‐benzo[b]thieno)‐ (8) and 2‐(2‐benzo[b]furano)‐3‐[3‐(2,5‐dioxo‐lH‐pyrrolidinyl)]indole (9) by a palladium(II)acetate/tetrachloro‐1,4‐benzoquinone oxidative A‐E ring clo