[OsH4(PPh3)3]: New Catalyst for the Selective Cyclopropanation of Activated Olefins

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Title:[OsH4(PPh3)3]: New Catalyst for the Selective Cyclopropanation of Activated Olefins
Creators:
Demonceau, Albert
Simal, François
Lemoine, Corine A.
Noels, Alfred F.
Chizhevsky, Igor T.
Sorokin, Pavel V.
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 61, 12, pp. 1798-1804
Uncontrolled Keywords:Cyclopropanation, Diazo compounds, Olefins, Catalysis, Osmium

Abstract

The title compound was found to be an efficient catalyst for the selective cyclopropanation of activated olefins by ethyl diazoacetate. The cyclopropane yields range from moderate to good (75 to 95%) for activated olefins such as styrene and styrene derivatives, but are rather low (20 to 30%) for non-activated olefins such as terminal and cyclic alkenes. In the intermolecular competition, styrene was 45 times more reactive than cyclooctene. In all cases, <i>trans</i> (<i>exo</i>) cyclopropane predominated over the <i>cis</i> (<i>endo</i>) isomer.

Title:[OsH4(PPh3)3]: New Catalyst for the Selective Cyclopropanation of Activated Olefins
Creators:
Demonceau, Albert
Simal, François
Lemoine, Corine A.
Noels, Alfred F.
Chizhevsky, Igor T.
Sorokin, Pavel V.
Uncontrolled Keywords:Cyclopropanation, Diazo compounds, Olefins, Catalysis, Osmium
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:61
Number:12
Page Range:pp. 1798-1804
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19961798UNSPECIFIED
ID Code:1087
Item Type:Article
Deposited On:06 Feb 2009 17:06
Last Modified:06 Feb 2009 16:06

Citation

Demonceau, Albert; Simal, François; Lemoine, Corine A.; Noels, Alfred F.; Chizhevsky, Igor T.; Sorokin, Pavel V. (1996) [OsH4(PPh3)3]: New Catalyst for the Selective Cyclopropanation of Activated Olefins. Collection of Czechoslovak Chemical Communications, 61 (12). pp. 1798-1804. ISSN 0010-0765

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