Abstract
Dehydrocoupling reactions of primary amines RNH2 with PhSiH3 were catalyzed by [(Et2N)3U][BPh4] to give the corresponding aminosilanes PhSiH3-n(NHR)n (n = 1-3), the relative yields of the products were found to be dependent on the experimental conditions and on the nature of R. For a primary silane (PhSiH3), the reactivity of RNH2 follows the order primary > secondary > tertiary. Similar dehydrocoupling reactions using secondary amines with secondary silanes were found to be less reactive. Homodehydrocoupling of the silane was found not to be a competing reaction at room temperature. The hydride [(RNH)2UH][BPh4], which is plausibly formed in the reaction of [(RNH)3U][BPh4] with PhSiH3 is a likely intermediate in the catalytic cycle.
Original language | English |
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Pages (from-to) | 49-57 |
Number of pages | 9 |
Journal | Journal of Organometallic Chemistry |
Volume | 610 |
Issue number | 1-2 |
DOIs | |
State | Published - 22 Sep 2000 |
Externally published | Yes |
Keywords
- Amines
- Cationic
- Dehydrocoupling
- Silanes
- Uranium