期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 9, 期 9, 页码 3415-3420出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ob01075h
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资金
- US National Science Foundation [CHE-0645998]
- UPMC
- CNRS
- French Agence Nationale de la Recherche (ANR) [BLAN0309 Radicaux Verts, 08-CEXC-011-01 Borane]
1,3-Dimethylimidazol-2-ylidene borane and 2,4-dimethyl-1,2,4-triazol-3-ylidene borane are found to be useful reagents for the reduction of alkyl iodides and bromides bearing nearby electron withdrawing substituents. Signatures of radical chain reactions are seen in many cases, but ionic reductions may also be occurring with some substrates. The reagents are attractive because of their low molecular weight, their availability from inexpensive precursors, and their stability. Separation of the borane products from the target products is readily accomplished either with or without prior regeneration of the borane for later reuse. 2,4-Dimethyl-1,2,4-triazol-3-ylidene borane is versatile because both starting borane and its derived products can be removed by extraction with water.
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