Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex.

ABSTRACT: The molybdenum and tungsten complexes M₂(OR)₆ (Mo2F6, M = Mo, R = C(CF₃)₂Me; W2F3, M = W, R = OC(CF₃)Me₂) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF₃) _n Me_{3- n} }] (MoF6, M = Mo, n = 2; WF3, M = W, n = 1; Mes = 2,4,6-trimethylphenyl). The corresponding benzylidyne complex [PhC≡W{OC(CF₃)Me₂}] (W ^Ph F3) was prepared by cleaving the W≡W bond in W2F3 with 1-phenyl-1-propyne. The catalytic alkyne metathesis activity of these metal complexes was determined in the self-metathesis, ring-closing alkyne metathesis and

SUBMITTER: Ehrhorn H 

PROVIDER: S-EPMC6178283 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature