期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 6, 页码 2365-2369出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201913773
关键词
alkynes; hydrosilylation; lanthanum; rare-earth metals; structure elucidation
资金
- National Natural Science Foundation of China [21890722, 21632006]
Hydrosilylation of alkynes generally yield vinylsilanes, which are inert to the further hydrosilylation because of the steric effects. Reported here is the first successful dihydrosilylation of aryl- and silyl-substituted internal alkynes enabled by a rare-earth ate complex to yield geminal bis- and tris(silanes), respectively. The lanthanum bis(amido) ate complex supported by an ene-diamido ligand proved to be the ideal catalyst for this unprecedented transformation, while the same series of yttrium and samarium alkyl and samarium bis(amido) ate complexes exhibited poor activity and selectivity, indicating significant effects of the ionic size and ate structure of the rare-earth catalysts.
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