Molecules 2012, 17(5), 5177-5186; doi:10.3390/molecules17055177
Communication

Synthesis of Electronically Modified Ru-Based Neutral 16 VE Allenylidene Olefin Metathesis Precatalysts

Martin Lichtenheldt, Steffen Kress and Siegfried Blechert* email
Technische Universität Berlin, Institut für Chemie, Sekr. C3, Straße des 17. Juni 135, Berlin 10623, Germany
* Author to whom correspondence should be addressed.
Received: 1 April 2012; in revised form: 25 April 2012 / Accepted: 26 April 2012 / Published: 4 May 2012
(This article belongs to the Special Issue Olefin Metathesis and Its Application)
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Abstract: Electronic modifications within Ru-based olefin metathesis precatalysts have provided a number of new complexes with significant differences in reactivity profiles. So far, this aspect has not been studied for neutral 16 VE allenylidenes. The first synthesis of electronically altered complexes of this type is reported. Following the classical dehydration approach (vide infra) modified propargyl alcohols were transformed to the targeted allenylidene systems in the presence of PCy3. The catalytic performance was investigated in RCM reaction (ring closing metathesis) of benchmark substrates such as diallyltosylamide (6) and diethyl diallylmalonate (7).
Keywords: olefin metathesis precatalysts; neutral allenylidene; electronic modifications; ring closing metathesis

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MDPI and ACS Style

Lichtenheldt, M.; Kress, S.; Blechert, S. Synthesis of Electronically Modified Ru-Based Neutral 16 VE Allenylidene Olefin Metathesis Precatalysts. Molecules 2012, 17, 5177-5186.

AMA Style

Lichtenheldt M, Kress S, Blechert S. Synthesis of Electronically Modified Ru-Based Neutral 16 VE Allenylidene Olefin Metathesis Precatalysts. Molecules. 2012; 17(5):5177-5186.

Chicago/Turabian Style

Lichtenheldt, Martin; Kress, Steffen; Blechert, Siegfried. 2012. "Synthesis of Electronically Modified Ru-Based Neutral 16 VE Allenylidene Olefin Metathesis Precatalysts." Molecules 17, no. 5: 5177-5186.

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