申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20040024229A1
公开(公告)日:2004-02-05
There is provided a production method for producing a biarylalanine compound of formula (4):
1
wherein R
1
represents a amino protective group and R
2
represents an amino protective group or a hydrogen atom, R
3
is a carboxy protective group, or the like, and
R
4
is a substituted or unsubstituted aryl or heteroaryl group, characterized by reacting an aromatic amino acid of formula (1)
2
wherein X is a halogen atom or a trifluoromethanesulfonyloxy group, and R
1
, R
2
and R
3
has the same meaning as defined above, with an organic boron compound of formula (2):
3
wherein R
4
has the same meaning as defined above, and Q
1
and Q
2
are the same or different and each is a hydroxy group, an alkoxy group having 1 to 4 carbon atom(s), in the presence of nickel catalyst and a base.
提供一种生产生产式(4)的联苯丙氨酸化合物的生产方法:
其中R1代表氨基保护基,R2代表氨基保护基或氢原子,R3是羧基保护基等,R4是取代或未取代的芳基或杂芳基,其特征在于将式(1)的芳香族氨基酸:
其中X是卤素原子或三氟甲磺氧基团,R1、R2和R3的含义与上述定义相同,与式(2)的有机硼化合物反应:
其中R4的含义与上述定义相同,Q1和Q2相同或不同,每个都是羟基、具有1至4个碳原子的烷氧基,在镍催化剂和碱的存在下。