Borole Dianions: Metalation of 1-(Dialkylamino)-2,5-dihydro-lH-boroles and the Structure of Li2 (C4 H4 BNEt2)·TMEDA
The dilithiated products 2 a, b are obtained from the 2,5‐dihydro‐lH‐boroles 1 a, b at room temperature if lithium 2,2,6,6‐tetramethylpiperidide (LiTMP) is used as base: with sterically less bulky lithium amides, borates are formed. 2b·TMEDA is present in the crystal as a centrosymmetric dimer with...
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| Veröffentlicht in: | Angewandte Chemie International Edition 1990-03, Vol.29 (3), p.317-318 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The dilithiated products 2 a, b are obtained from the 2,5‐dihydro‐lH‐boroles 1 a, b at room temperature if lithium 2,2,6,6‐tetramethylpiperidide (LiTMP) is used as base: with sterically less bulky lithium amides, borates are formed. 2b·TMEDA is present in the crystal as a centrosymmetric dimer with two pentahapto‐bound Li atoms per unit. |
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| ISSN: | 0570-0833 1521-3773 |
| DOI: | 10.1002/anie.199003171 |