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A lineup of highly efficient ruthenium catalysts with N-containing substituents in the benzylidene ligand is developed that differ in the rate of initiation of dicyclopentadiene metathesis polymerization. The choice of the optimal catalyst makes it possible to control the lifetime of the monomer–catalyst reaction mixture in a wide range, which makes the use of various technologies effective for the...
Transformations of 1-benzyl-2,2-di(2-propenyl)pyrrolidine and 1-benzyl-2,2-di(2-propenyl)piperidine into the corresponding 1-azaspiro[4.n]alkenes via ring-closing metathesis using accessible homogeneous catalytic systems WCl6—H2SiPh2, WOCl4—H2SiPh2, and Ru(=CHPh)(PCy3)2Cl2 (Cy is cyclohexyl) were performed for the first time.
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