Catalyst composition for effecting metathesis of olefins
AssigneeMassachusetts Institute of Technology
InventorRichard R. Schrock
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Abstract
Compounds of the formula: M(NR.sup.1)(OR.sup.2).sub.2 (CHR.sup.3) wherein M is molybdenum or tungsten; R.sup.1 and R.sup.2 are alkyl, aryl, aralkyl or halogen-substituted derivatives or silicon-containing analogs thereof; R.sup.3 is an alkyl, aryl, aralkyl or any substituent that results from the initial reaction between the M.dbd.CHR.sup.3 complex and the olefin(s) that is(are) being metathesized; alkyl has 1-20 carbons, aryl has 6-20 carbons and aralkyl has 7-20 carbons. These compounds are catalysts for the metathesis of ordinary olefins (hydrocarbons) and especially functionalized olefins in the homogeneous phase.
Claims7
The process of metathesizing an olefin which comprises contacting said olefin in a solvent with a catalyst having the formula:
- M(NR.sup.1)(OR.sup.2).sub.2 (CHR.sup.3)
- wherein:
- M is Mo or W
- R.sup.1 and R.sup.2 are alkyl, aryl, aralkyl, haloalkyl, haloaryl, haloaralkyl or a silicon-containing analog thereof;
- and
- R.sup.3 is alkyl, aryl, aralkyl or a substituent resulting from the reaction of the M.dbd.CHR.sup.3 moiety of said catalyst with an olefin being metathesized and recovering the metathesized product.
Dependencies are inferred from the claim text.