、 N,N-二异丙基乙胺 、 (1S,2S)-(+)-N-对甲苯磺酰基-1,2-二苯基乙二胺 在
silica gel 、 ethyl acetate n-hexane 作用下,
以
甲苯 为溶剂,
反应 14.0h,
以Thus, 9.31 g of the title compounds were obtained as a yellow oily substance的产率得到4-methyl-N-((1S,2S)-2-(4-(5-methylcyclohexa-1,4-dienyl)butylamino)-1,2-diphenylethyl)benzenesulfonamide
参考文献:
名称:
Ruthenium-diamine complex and method for producing optically active compound
RUTHENIUM-DIAMINE COMPLEX AND METHOD FOR PRODUCING OPTICALLY ACTIVE COMPOUND
申请人:Touge Taichiro
公开号:US20140051871A1
公开(公告)日:2014-02-20
Provided is a ruthenium complex that is represented by general formula (1*) and is useful as an asymmetric reduction catalyst.
(In the formula, * is an asymmetric carbon atom; R
1
is an arenesulfonyl group, and the like; R
2
and R
3
are a phenyl group, and the like; R
10
through R
14
are selected from a hydrogen atom, C
1-10
alkyl group, and the like, but R
10
through R
14
are not simultaneously hydrogen atoms; X is a halogen atom and the like; j and k are each either 0 or 1; and j+k is 0 or 2.)
Newly developed oxo-tethered Ru amido complexes (R,R)-1 and their HCl adducts (R,R)-2 exhibited excellent catalytic performance for both asymmetric transfer hydrogenation and the hydrogenation of ketonic substrates under neutral conditions without any cocatalysts to give chiral secondary alcohols with high levels of enantioselectivity.
The present invention provides a method for producing a compound represented by general formula (1) (wherein R
1
, R
2
, R
3
, R
10
-R
14
, A
1
-A
3
, n
1
and n
2
are as defined in the description), which is characterized by reacting a compound represented by general formula (2) (wherein R
10
-R
14
, A
1
-A
3
, n
1
, n
2
and B are as defined in the description) with a diamine compound represented by general formula (3) (wherein R
1
-R
3
are as defined in the description). The present invention is a method for producing a diamine compound, which is useful for the formation of a ruthenium-diamine complex, under mild conditions, said method being able to be put in industrial practice.