Organometallic catalysis: From concepts to selected applications

The Metal-Carbon Bond: Vol. 3 (1985)

Journal of the American Chemical Society, 1986

The ortho-metalated ruthenium complexes I and I1 react with ethylene to give ortho-ethylated phosphite products. I I1 Complex I1 reacts to give products with five and six ethyl groups/phosphorus P(o(2,6-Et2-C6H3))2(o(2-Et-c6H~)) (111,) and P(0(2,6-Et3-C,H,)), (III,), while complex I reacts to mainly give the phosphite products P(0(2,6-Et2-C6H3)), (OPh) (MI) and P(o(2,6-Et2-C6H3))2(o(2-Et-c6H~)) (I&). Complex I1 and KOPh are cocatalysts for the selective ortho ethylation of phenol with ethylene. The reaction of I with propylene results in a lower degree of alkylation, Le., P(o(2,6-(i-Pr),-C6H3)) (OPh), (W,), than is obtained from ethylene. The product of the reaction of styrene with I gives low molecular weight polystyrene 525. 1979, 101, 2411. of this type involving attack on *-ethylene and a-benzene ligands are shown in eq 1 and 2. Such reactions are important in certain industrial processes, such as the Wacker acetaldehyde synthesis,2 and are also useful in a variety of laboratory scale s y n t h e~e s .~ In (2) Backvall, J. E.; Akermark, B.; Ljunggren, S. 0. J. Am. Chem. SOC.

Advanced Synthesis & Catalysis, 2003

Dedicated to Professor Dieter Seebach for his achievements in asymmetric catalysis.

The Royal Society of Chemistry eBooks, 2004

The utilization of enzymes in organic synthesis-either as pure compounds or as part of the whole cell, very often immobilized on solid supports-has made it possible to take advantage of their remarkable efficiency and selectivity to develop a great number of successful applications. The impact of biotransformations on synthetic organic chemistry is already relevant and will surely grow. The purpose of this chapter is to overview some of the fundamental aspects of this area, with a particular emphasis on synthetic applications. Examples of hydrolysis, oxidation, reduction, halogenation, and carbon-carbon bond-forming reactions are described, as well as recycling of cofactors with enzymes that require their presence. Mention is also made of catalytic antibodies (abzymes) and of a subject that appears to be one of the most exciting challenges of the modern catalysis-the design of synthetic models of biological catalysts.

2013

Journal of Chemical Education, 2001

Annals of the New York Academy of Sciences, 1983

Ring Opening Metathesis Polymerisation and Related Chemistry, 2002

Chemical Reviews, 2000

Tetrahedron, 2008