申请人:SYNGENTA PARTICIPATIONS AG
公开号:US20160046658A1
公开(公告)日:2016-02-18
The present invention relates to a process for the preparation of a compound of formula (I), wherein X is —CH
2
—, —CH
2
—CH
2
—, —CH
2
—CH
2
—CH
2
— or —CH
2
—CH
2
—CH
2
—CH
2
—; Y
1
is —CH
2
—; —CH2—CH
2
— or —NH—; Y
2
is NHR
7
, or SH; wherein R
7
is hydrogen, C
1
-C
4
alkyl or phenyl; R—
1
and R
2
, independently from each other, represent aliphatic or aromatic groups; R
3
and R
4
, independently from each other, represent aliphatic or aromatic groups; R
5
and R
6
are each hydrogen or represent together with the carbon atoms to which they are bonded, a phenyl ring; which process comprises reacting a compound of formula II [RuCI
2
(R
8
)n]m (II), wherein n is 1 and m is >1 which represents a polymeric structure if R
8
is a molecule containing two alkene or alkyne moieties coordinating in an hapto-2 coordination mode to the metal; or n is 4 and m is 1 if R
8
is a nitrogen, oxygen or sulfur containing molecule in which said nitrogen, oxygen or sulfur coordinate to the metal; in the presence of an inert solvent which boiling point is from 112° C. to 165° C. with a compound of formula (III), wherein R
5
, R
6
, Y
1
and Y
2
are as defmed under formula I, and a phosphane of formula IV R3R4P—X—PR
1
R
2
(iv), wherein R
1
, R
2
, R
3
, R
4
and X are as defined under formula I.