申请人:Chen Kwunmin
公开号:US20110040104A1
公开(公告)日:2011-02-17
The present invention provides an organocatalyst of formula (I),
wherein R
1
is —H, —OH, —O—Si(R
4
)(R
5
)(R
6
) or C
1-6
alkoxy, in which R
4
, R
5
and R
6
are identical or different and independently selected from the group consisting of C
1-6
alkyl, phenyl and phenyl substituted with C
1-6
alkyl; R
2
is —OH or ═O; X
1
is one selected from the group consisting of —NH—, —S— and
X
2
is one selected from the group consisting of —C(═O)—, —CH
2
— and
and X
1
is different from X
2
. The high yield and enantioselectivity of an addition reaction are obtained by using the organocatalyst of the present invention.
本发明提供了一种式(I)的有机催化剂,其中R1为—H,—OH,—O—Si(R4)(R5)(R6)或C1-6烷氧基,其中R4、R5和R6相同或不同,并且独立地选自由C1-6烷基、苯基和苯基上取代的C1-6烷基的群;R2为—OH或═O;X1为从—NH—、—S—中选择的一种;X2为从—C(═O)—、—CH2—中选择的一种;X1与X2不同。通过使用本发明的有机催化剂,可以获得加成反应的高产率和对映选择性。