Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
N-HETEROCYCLIC CARBENE COMPLEXES OF METAL IMIDO ALKYLIDENES AND METAL OXO ALKYLIDENES, AND THE USE OF SAME
Document Type and Number:
WIPO Patent Application WO/2015/162245
Kind Code:
A3
Abstract:
The invention relates to an N-heterocyclic carbene complex of general formulas I to IV (I) (II) (III) (IV), according to which A1 stands for NR2 or PR2, A2 stands for CR2R2', NR2, PR2, O or S, A3 stands for N or P, and C stands for a carbene carbon atom, ring B is an unsubstituted or a mono or poly-substituted 5 to 7-membered ring, substituents R2 and R2' stand, inter alia, for a linear or branched C1-C10-alkyl group and, if A1 and A2 each stand for NR2 or PR2, are the same or different, M in formulas I, II, III or IV stands for Cr, Mo or W, X1 or X2 in formulas I to IV are the same or different and represent, inter alia, C1-C18 carboxylates and C1-C18-alkoxides, Y is inter alia oxygen or sulphur, Z is inter alia a linear or branched C1-C10-alkylenoxy group, and R1 and R1' in formulas I to IV are, inter alia, an aliphatic or aromatic group. These compounds are particularly suitable for use as catalysts for olefin metathesis reactions and have the advantage, compared to known Schrock carbene complexes, of displaying clearly increased tolerance to functional groups such as, in particular, aldehydes, secondary amines, nitriles, carboxylic acids and alcohols.

Inventors:
BUCHMEISER MICHAEL R (DE)
SEN SUMAN (IN)
SCHOWNER ROMAN (DE)
Application Number:
PCT/EP2015/058888
Publication Date:
February 25, 2016
Filing Date:
April 24, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNIV STUTTGART (DE)
International Classes:
C07F11/00; B01J31/00; C08F4/00
Other References:
MICHAEL R. BUCHMEISER ET AL: "N-Heterocyclic Carbene, High Oxidation State Molybdenum Alkylidene Complexes: Functional-Group-Tolerant Cationic Metathesis Catalysts", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, vol. 53, no. 35, 25 August 2014 (2014-08-25), pages 9384 - 9388, XP055203685, ISSN: 1433-7851, DOI: 10.1002/anie.201404655
CEZARY SAMOJLOWICZ ET AL: "Ruthenium-Based Olefin Metathesis Catalysts Bearing N -Heterocyclic Carbene Ligands", CHEMICAL REVIEWS, vol. 109, no. 8, 12 August 2009 (2009-08-12), pages 3708 - 3742, XP055071094, ISSN: 0009-2665, DOI: 10.1021/cr800524f
Attorney, Agent or Firm:
HELD, Stephan (Bolte & Partner GBRChemie Abteilun, P.O. Box 86 06 24 München, DE)
Download PDF: