Ruthenium(I)-catalyzed cyclopropanation reactions with (trimethylsilyl)diazomethane and aryldiazomethanes

✍ Scribed by Gerhard Maas; Jürgen Seitz

• Book ID: 104231278
• Publisher: Elsevier Science
• Year: 2001
• Tongue: French
• Weight: 71 KB
• Volume: 42
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)01221-7

✦ Synopsis

The polymeric ruthenium(I) complex [Ru 2 (CO) 4 (m-OAc) 2 ] n is a suitable catalyst for the cyclopropanation of mono-, 1,1as well as 1,2-disubstituted, and trisubstituted alkenes with (trimethylsilyl)diazomethane, phenyl-diazomethane, and (4cyanophenyl)diazomethane. Trisubstituted alkenes are cyclopropanated with a remarkable degree of syn-selectivity.