New Pathways to Precursors of Pentalene
Syn-cis-(2) and anti-cis-(3) pentalene dimers are easily available by CuCl2-induced oxidative coupling of dilithium-pentalenediide (5). On the other hand, NBS-bromination as well of 1,5-dihydro-pentalene (4) as of 1,2-dihydropentalene (6) gives unstable 1-bromo-1,2-dihydropentalene (7), wh...
| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
1996-01-01
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| Series: | CHIMIA |
| Online Access: | https://chimia.ch/chimia/article/view/2599 |
| Summary: | Syn-cis-(2) and anti-cis-(3) pentalene dimers are easily available by CuCl2-induced oxidative coupling of dilithium-pentalenediide (5). On the other hand, NBS-bromination as well of 1,5-dihydro-pentalene (4) as of 1,2-dihydropentalene
(6) gives unstable 1-bromo-1,2-dihydropentalene (7), while subsequent in situ elimination with Et3N exclusively leads to syn-cis-pentalene dimer 2 in moderate yields.
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| ISSN: | 0009-4293 2673-2424 |