Effects of chelating diphosphines on the rhodium catalysed carbonylation of allylamines
✍ Scribed by Ricardo Gomes da Rosa; José Daniel Ribeiro de Campos; Regina Buffon
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 178 KB
- Volume
- 137
- Category
- Article
- ISSN
- 1381-1169
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The dimeric rhodium precursor [Rh(CO) 2 Cl] 2 reacts with two molar equivalent of 9,9-dimethyl-4,5bis (diphenylphosphino)xanthene [xantphos] (a), bis(2-diphenylphosphinophenyl)ether [DPEphos] (b) and their corresponding dioxide analogues xantphos dioxide (c), DPEphos dioxide (d) to afford the monoan
The effects of the presence of water on the rhodium-catalyzed carbonylation of isopropylallylamine were studied as a function of the following parameters: reaction temperature; water content; presence of phosphines; solvent polarity and presence of bulky ions. It turned out that the reaction is stro