申请人:List Benjamin
公开号:US20090281346A1
公开(公告)日:2009-11-12
Disclosed is a method for producing aminocarbonyl compounds of the general formula (I)
wherein
R
1
and R
2
can be identical or different and represents hydrogen, alkyl, alkenyl, alkynyl, or aryl,
X represents hydrogen, alkyl, alkenyl, alkynyl, aryl, or OR
3
, R
3
representing hydrogen, alkyl, alkenyl, alkynyl, or aryl.
According to said method, an aldehyde of the general formula (II)
R
1
CO (II)
wherein
R
1
has the meaning indicated above, is reacted with an imine of the general formula (III)
wherein R
2
and X have the meaning indicated above, in the presence of a catalyst.
Aminocarbonyles are obtained by means of catalyzed Mannich reactions with aldehydes. For example, if α-unbranched aldehydes are reacted with previously formed N-Boc imines in the presence of (S)-proline as a catalyst, the desired β-amino aldehydes are obtained at excellent yields, diastereoselectivities and enantioselectivities.
本发明公开了一种制备氨基甲酰化合物的方法,其一般式为(I),其中R1和R2可以相同或不同,表示氢,烷基,烯基,炔基或芳基,X表示氢,烷基,烯基,炔基,芳基或OR3,R3表示氢,烷基,烯基,炔基或芳基。根据所述方法,在催化剂的存在下,将一般式为(II)的醛R1CO(II)与一般式为(III)的亚胺反应,其中R2和X具有上述含义。通过催化曼尼希反应与醛类得到氨基甲酰化合物。例如,如果α-非支链醛与先前形成的N-Boc亚胺在(S)-脯氨酸催化剂的存在下反应,则可以获得所需的β-氨基醛,收率、对映选择性和对映选择性均非常优异。