期刊
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
卷 6, 期 -, 页码 -出版社
BEILSTEIN-INSTITUT
DOI: 10.3762/bjoc.6.28
关键词
block copolymers; catalysis; hydrophilic polymers; metathesis; micelles
资金
- Clariant Germany
- Technische Universitat Berlin
- Federal Government of Germany
- Freistaat Sachsen
Norborn-5-ene-(N,N-dipyrid-2-yl)carbamide (M1) was copolymerized with exo, exo-[2-(3-ethoxycarbonyl-7-oxabicyclo[2.2.1]hept-5- en-2-carbonyloxy)ethyl]trimethylammonium iodide (M2) using the Schrock catalyst Mo(N-2,6-Me-2-C6H3)(CHCMe2Ph)(OCMe(CF3)(2))(2) [Mo] to yield poly(M1-b-M2). In water, poly(M1-b-M2) forms micelles with a critical micelle-forming concentration (cmc) of 2.8 x 10(-6) mol L-1; Reaction of poly(M1-b-M2) with [Rh(COD)Cl](2) (COD = cycloocta-1,5- diene) yields the Rh(I)-loaded block copolymer poly(M1-b-M2)-Rh containing 18 mg of Rh(I)/g of block copolymer with a cmc of 2.2 x 10(-6) mol L-1. The Rh-loaded polymer was used for the hydroformylation of 1-octene under micellar conditions. The data obtained were compared to those obtained with a monomeric analogue, i. e. CH3CON(Py)(2)RhCl(COD) (C1, Py = 2-pyridyl). Using the polymer-supported catalyst under micellar conditions, a significant increase in selectivity, i. e. an increase in the n: iso ratio was accomplished, which could be further enhanced by the addition of excess ligand, e. g., triphenylphosphite. Special features of the micellar catalytic set up are discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据