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US 11,952,395 B1Granted
Vanadium alkylidene complex, synthesis and use thereof
AssigneeThe Florida International University Board of Trustees
InventorsKonstantin Bukhryakov, Dmitry Belov
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Abstract
The subject invention provides catalytical compounds/complexes, compositions comprising such compound/complex, synthesis of the compounds/complexes, and methods of using such compounds/complexes as catalysts in, for example, RCM reactions. Specifically, the subject invention provides the synthesis of the first catalytically active V oxo alkylidene, VO(CHSiMe3)(PEt3)2Cl, which exhibits superior performance compared to other analogs.
Claims16
A complex having a general structure of formula (I):
- wherein
- E is NR″, or S;
- X is selected from halogens, alkoxides, thioalkoxides, and sulfonates;
- R and R′ are each independently selected from hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, heterocycles, substituted heterocycles, —ORa, —Si(Rb)3 and RcRd, wherein Ra, Rb, Rc and Rd are independently selected from hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl;
- R″ is selected from hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, heterocycles, and substituted heterocycles;
- and
- L1 and/or L2 are:
- (1) NHCs selected from
- wherein R4 and R5 are independently selected from hydrogen, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, aryl and substituted aryl;
- (2) pyridines having a structure of
- wherein R6, R7, R8, R9, R10 are each independently selected from hydrogen, halogens, alkyl, substituted alkyl, hydorxyl, acyl, and —NH2;
- or
- (3) nitriles selected from
- wherein R6, R7, R8, R9, R10 are each independently selected from hydrogen, halogens, alkyl, substituted alkyl, hydorxyl, acyl, and —NH2.
11 more elements
A complex having a general structure of formula (I):
- wherein E is NR″;
- and NR″ is
- wherein R6, R7, R8, R9, R10 are each independently selected from hydrogen, alkyl, and substituted alkyl;
- L1 is
- wherein R4 and R5 are independently selected from hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl;
- L2 is a phosphine;
- X is halogen;
- R is hydrogen, and
- R′ is substituted aryl.
6 more elements
Dependencies are inferred from the claim text.