2, 3-Bis(dialkylphosphino)pyrazine derivative, process of producing the same, and metal complex having the same as ligand
申请人:Imamoto Tsuneo
公开号:US20070021610A1
公开(公告)日:2007-01-25
An optically active 2,3-bis(dialkylphosphino)pyrazine derivative represented by formula (1) is disclosed. The pyrazine derivative is preferably a quinoxaline derivative represented by formula (2). In formula (1) and (2), R
1
is preferably a t-butyl or adamantyl group, and R
2
is preferably a methyl group.
wherein R
1
is a substituted or unsubstituted, straight chain or branched alkyl group having 2 to 10 carbon atoms; R
2
is a substituted or unsubstituted, straight chain or branched alkyl group having fewer carbon atoms than R
1
; and R
3
and R
4
, which may be the same or different, are each a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, or R
3
and R
4
are taken together to form a saturated or unsaturated ring.
wherein R
1
and R
2
are as defined above; and R
5
is a monovalent substituent.
公开了一种由式(1)表示的光学活性的2,3-双(二烷基膦基)吡嗪衍生物。该吡嗪衍生物最好是由式(2)表示的喹啉衍生物。在式(1)和(2)中,R1最好是叔丁基或金刚烷基,R2最好是甲基。
其中,R1是取代或未取代的,具有2至10个碳原子的直链或支链烷基基团;R2是取代或未取代的,碳原子比R1少的直链或支链烷基基团;R3和R4,可以相同也可以不同,分别是氢原子或具有1至6个碳原子的烷基基团,或者R3和R4一起形成饱和或不饱和环。
其中,R1和R2如上所定义;R5是一价取代基。