Transition metal catalyzed hydrogenation or reduction in water

✍ Scribed by Kotohiro Nomura

• Book ID: 104423519
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 453 KB
• Volume: 130
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(97)00141-6

✦ Synopsis

This paper summarizes recent reports on i hydrogenation including transfer hydrogenation by HCO Na of olefins or 2 Ž . aldehydes in water, and ii reduction of aromatic nitro compounds with carbon monoxide and water by homogeneous transition metal catalysts. The discussion will be focused on the hydrogenation of a ,b-unsaturated aldehydes by ruthenium-sulfonated phosphine complexes that show remarkable chemoselectivity toward C5O bonds. The author also introduces selective reduction of aromatic nitro-groups by ruthenium or rhodium catalysts under COrH O conditions. These 2 catalytic reactions are very important from both synthetic and industrial viewpoints, not only because the after-treatment of by-products can be simplified from the conventional methods, but also because the reaction also proceeds with high selectivity affording the desired products.