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IMIDO-TETHERED CARBENES OF MOLYBDENUM FOR RING-OPENING METATHESIS POLYMERISATION AND RING-CLOSING METATHESIS
IMIDO-TETHERED CARBENES OF MOLYBDENUM FOR RING-OPENING METATHESIS POLYMERISATION AND RING-CLOSING METATHESIS
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机译:钼的亚甲基四氢呋喃用于开环复分解和闭环复分解
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摘要
Compounds and processes for catalytic ring-opening cyclooligomerization metathesis and ring-closing metathesis of olefins are described. The compound is a molybdenum or tungsten metal (M) complex which comprises an imido ligand (N-R) bound to the M to provide an M=N-R site, an M=C reaction site wherein the C of the M=C reaction site is tethered~to the R of the imido ligand via a carbon or carbon and heteroatom (NOS) chain containing 1 to 12 carbon atoms to form a ring structure, and two to four ligands (R′) bound to the M to provide two to four M-R′ sites. In particular embodiments, the M-R′ sites include each of the oxygens of a dialkoxide ligand or each of the nitrogens of an η 1- pyrrolyl ligand bond to the M.
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