期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 18, 页码 6463-6473出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja100521m
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资金
- Spanish Ministerio de Educacion y Ciencia [CTQ2008-00683]
- Consolider Ingenio [CSD2006_0003]
- European Union [MEXC-CT-2005-0023600]
A series of bulky phosphines containing substituted biphenyl, 2-methylnaphthyl, or 2,7-di-tertbuty1-9,9-dimethylxanthene moiety were prepared. They were used in the preparation of new monophosphine -palladium(0)-dvds complexes, which were employed as catalysts for the selective telomerization of 1,3-butadiene with methanol to obtain 1-methoxyocta-2,7-diene (1-MOD), the key intermediate in the Dow 1-octene process. Several ligands showed improved selectivity and yield compared to that of the benchmark ligand PPh3. Especially 2,7-di-tert-butyl-9,9-dimethylxanthen-4-yl-diphenylphosphine (4, monoxantphos) stands out as an excellent ligand in terms of yield, selectivity, and stability.
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