期刊
MONATSHEFTE FUR CHEMIE
卷 146, 期 7, 页码 1143-1151出版社
SPRINGER WIEN
DOI: 10.1007/s00706-015-1484-x
关键词
Olefin metathesis; Ruthenium; Structure-activity relationships; Polymerizations
资金
- European Community [CP-FP 211468-2 EUMET]
- Chemical Monthly stipend
A series of electron-rich second-generation cis-dichloro ruthenium aldehyde-chelating benzylidene complexes was prepared, characterized, and tested in typical ring-opening metathesis polymerization (ROMP) experiments. The benzylidene precursors were prepared via etherification of the hydroxyl group and vinylation at position 2 of 2-bromo-5-hydroxy-4-methoxybenzaldehyde. The corresponding ruthenium complexes were obtained from a carbene exchange reaction and were characterized by a cis-dichloro arrangement. A pronounced lability of the chloride ligand trans to the N-heterocyclic carbene ligand in methanol was observed and it was shown that this feature is responsible for a particularly slow ROMP in this solvent. [GRAPHICS] .
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