The present invention relates to a production method of asymmetric compound (IV) which includes conjugately adding nucleophilic reagent (III) to compound (II) in the presence of asymmetric urea compound (I). The present invention provides a non-metallic asymmetric catalyst capable of realizing a highly stereoselective asymmetric conjugate addition reaction in a high yield, and an advantageous production method of an asymmetric compound by an asymmetric conjugate addition reaction using the asymmetric catalyst.
wherein X is an oxygen atom or a sulfur atom; C*, C** and C*** are asymmetric carbons; R
1
, R
2
, R
4
, R
5
, R
8
, R
9
and R
10
are each a lower alkyl group optionally having substituent(s) and the like, or R
4
and R
5
and the like in combination optionally form a homocyclic ring optionally having substituent(s) and the like; R
3
is an aryl group optionally having substituent(s) and the like; R
6
and R
7
are each a hydrogen atom and the like; Nu is —CR
16
(COR
17
)(COR
18
) wherein R
16
, R
17
and R
18
are each a lower alkyl group optionally having substituent(s) and the like, and the like; and EWG is an electron withdrawing group.
本发明涉及一种不对称化合物(IV)的生产方法,其中在不对称
脲化合物(I)的存在下,将亲核试剂(III)共轭加到化合物(II)上。本发明提供了一种非
金属不对称催化剂,能够在高产率下实现高度立体选择性的不对称共轭加成反应,并且提供了使用该不对称催化剂进行不对称共轭加成反应的有利生产方法。
其中,X是氧原子或
硫原子;C*、C**和C***是不对称碳;R1、R2、R4、R5、R8、R9和R10分别是低级烷基,可选地具有取代基等,或者R4和R5等组合可选地形成具有取代基等的同环烷基;R3是芳基,可选地具有取代基等;R6和R7分别是氢原子等;Nu是—CR16(COR17)(COR18),其中R16、R17和R18分别是低级烷基,可选地具有取代基等;EWG是电子吸引基团。