申请人:Percec Virgil
公开号:US20110207957A1
公开(公告)日:2011-08-25
The invention concerns processes for the synthesis of a compound of the formula: wherein: R
1
and R
2
are each, independently, C
1
-C
12
alkyl, CO
2
R
3
, OR
4
, R
5
(OR
6
), or C
6
-C
18
aryl; R
3
-R
6
are each, independently, C
1
-C
12
alkyl or C
6
-C
12
aryl; and n and m are each, independently, O or an integer from 1-5; said process comprising: —contacting a compound of the formula H0-R
7
-0H with BH
3
and a compound of the formula in the presence of a nickel-containing catalyst to produce a first product, where R
7
is a C
2
-C
12
hydrocarbon group and X is a halogen, OMs or OTs; —contacting the first product in situ with a compound of the formula: in the presence of a nickel-containing catalyst to produce a compound of formula I, where Z is a halogen.