Back to Search
Start Over
MnBr(CO)5: a commercially available highly active catalyst for olefin hydrosilylation under ambient air and green conditions.
- Source :
- Green Chemistry; 10/7/2023, Vol. 25 Issue 19, p7721-7728, 8p
- Publication Year :
- 2023
-
Abstract
- The catalytic hydrosilylation of alkenes is a major industrial reaction and a very efficient and atom-economical way to obtain functional organosilane compounds and cross-linked materials. Platinum-based catalysts are currently preferred in the industry despite the low availability and high cost of platinum but considerable efforts are being directed to replace Pt with non-noble metals. In this context, we developed a robust and highly active non-noble metal catalytic system using commercially available MnBr(CO)<subscript>5</subscript>. It was successfully employed in olefin hydrosilylation reactions using various functional olefins and industrially relevant silanes such as 1,1,1,3,5,5,5-heptamethyltrisiloxane (MDHM) and polymethylhydrosiloxanes (PMHS). This system tolerates unpurified substrates and can be used in green solvents (H<subscript>2</subscript>O, anisole) under ambient air, selectively yielding the anti-Markovnikov hydrosilylated products (yields up to >99%) at 70 °C using 2 mol% catalyst. MnBr(CO)<subscript>5</subscript> was also successfully employed for the synthesis of cross-linked materials using dienes, carbonyl and epoxide containing substrates with low Mn loadings (0.3 mol%) at 70 °C under ambient air. [ABSTRACT FROM AUTHOR]
- Subjects :
- ALKENES
HYDROSILYLATION
AIR conditioning
CATALYSTS
DIOLEFINS
Subjects
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 25
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 172789841
- Full Text :
- https://doi.org/10.1039/d3gc02385k