## Abstract Benzo[b]thieno[2,3βa]pyrrolo[3,4βc]carbazoles and benzo[b]furano[2,3βa]pyrrolo[3,4βc]carbazoles were prepared from 2β(2βbenzo[b]thieno)β (8) and 2β(2βbenzo[b]furano)β3β[3β(2,5βdioxoβlHβpyrrolidinyl)]indole (9) by a palladium(II)acetate/tetrachloroβ1,4βbenzoquinone oxidative AβE ring clo
β¦ LIBER β¦
Synthesis and reactions of 2,4-disubstituted benzo[b]furano-, benzo[b]thieno- and indolo[3,2-d]-1,3-oxazinium salts
β Scribed by S. V. Tolkunov; V. N. Voshchula; E. A. Zemskaya; V. I. Dulenko
- Book ID
- 104782303
- Publisher
- Springer US
- Year
- 1990
- Tongue
- English
- Weight
- 182 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-3122
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A method has been developed for the synthesis of 3-acetonyl-and 3-phenacylbenzo[b]furans by cyclization of l-arloxy-2,4-pentanedlones and l-phenyl-4-aryloxy-1,3-butanediones in polyphosphoric acid. Acylation of 3-acetonyl(phenyl-benzo-[b]furans with aliphatic acid anhydrides in the presence ofperchl