申请人:SCHRODI Yann
公开号:US20170022232A1
公开(公告)日:2017-01-26
Synthetic methods for the in-situ formation of olefin metathesis catalysts are disclosed, as well as the use of such catalysts in metathesis reactions of olefins and olefin compounds. In one aspect, a method is provided for synthesizing an organometallic compound of the formula
comprising contacting a precursor compound of the formula (X
1
X
2
ML
j
L
1
k
L
3
m
)
i
with an acetylenic compound comprising a chelating moiety, optionally, in the presence of a neutral electron donor, wherein M is a Group 8 transition metal, L, L
1
, L
2
, and L
3
are neutral electron donors, X
1
and X
2
are anionic ligands, j is 1, 2, or 3; k is zero, 1, or 2; m is zero or 1; n is 1 or 2; and i is an integer; with the proviso that k is zero when the precursor compound is contacted with the acetylenic compound in the presence of the neutral electron donor, and R
1
and R
2
are independently selected from hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, substituted heteroatom-containing hydrocarbyl, and functional groups, wherein R
1
and R
2
are linked and together form one or more cyclic groups, R
2
and L
2
are linked and together form one or more cyclic groups, and any other two or more of X
1
, X
2
, L
1
, L
2
, L
3
, R
1
, and R
2
can be taken together to form one or more cyclic groups. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and industrial and fine chemicals chemistry.