A Highly Reusable Rhodium Catalyst-Organic Framework for the Intramolecular Cycloisomerization of 1,6-Enynes
摘要:
The intramolecular cycloisomerization of 1,6-enynes in 95-99% ee is reported using an immobilized Rh catalyst-organic framework synthesized from alternating ring-opening metathesis polymerization (altROMP) assembly. The framework was reused up to seven times, and it was used in high turnover number (TON) batch reactions. The catalyst provided the highest TONs to date (up to 890) for the cycloisomerizations, with catalyst loadings ranging from 0.2 to 0.06 mol %.
[EN] HETEROGENEOUS RHODIUM METAL CATALYSTS<br/>[FR] CATALYSEURS MÉTALLIQUES HÉTÉROGÈNES AU RHODIUM
申请人:UNIV ALBERTA
公开号:WO2011035445A1
公开(公告)日:2011-03-31
Novel polymeric rhodium catalysts having repeating subunits of Formula (I), wherein R1-R8, X, A, m, n and p are as defined in the application, are described along with methods of using these catalysts, as well as precursors therefor, in the chemical synthesis transformations.
A Highly Reusable Rhodium Catalyst-Organic Framework for the Intramolecular Cycloisomerization of 1,6-Enynes
作者:Elizabeth G. Corkum、Michael J. Hass、Andrew D. Sullivan、Steven H. Bergens
DOI:10.1021/ol201333s
日期:2011.7.1
The intramolecular cycloisomerization of 1,6-enynes in 95-99% ee is reported using an immobilized Rh catalyst-organic framework synthesized from alternating ring-opening metathesis polymerization (altROMP) assembly. The framework was reused up to seven times, and it was used in high turnover number (TON) batch reactions. The catalyst provided the highest TONs to date (up to 890) for the cycloisomerizations, with catalyst loadings ranging from 0.2 to 0.06 mol %.
HETEROGENEOUS RHODIUM METAL CATALYSTS
申请人:Bergens Steven H.
公开号:US20130053576A1
公开(公告)日:2013-02-28
Novel polymeric rhodium catalysts having repeating subunits of Formula (I), wherein R
1
-R
8
, X, A, m, n and p are as defined in the application, are described along with methods of using these catalysts, as well as precursors therefor, in the chemical synthesis transformations.