申请人:Kobayashi Shu
公开号:US20070142672A1
公开(公告)日:2007-06-21
[PROBLEMS] To provide a novel method for the allylation of N-acylhydrazones by which enantioselectively allylated N-acylhydrazines can be efficiently obtained.
[MEANS FOR SOLVING PROBLEMS] A method for the production of enantioselectively allylated N-acylhydrazines represented by the general formula [3]:
[wherein R
0
is an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group, or —COOR
1
(wherein R
1
is a hydrocarbon group); R
2
is acyl; R
3
and R
4
are each hydrogen, or one of R
3
and R
4
is hydrogen and the other is a hydrocarbon group; and R
5
and R
6
are each independently hydrogen or a hydrocarbon group], characterized by reacting an N-acylhydrazone represented by the general formula [1]:
[wherein R
0
and R
2
are as defined above] with an allylating agent such as allyltrichlorosilane or crotyltrichlorosilane in the presence of a chiral phosphine oxide.
[问题] 提供一种新的N-酰基肼的烯丙基化方法,以有效获得对映选择性烯丙基化的N-酰基肼。
[解决问题的方法] 一种生产对映选择性烯丙基化N-酰基肼的方法,表示为通式[3]:[其中R0是可选取代的碳氢化合物基团,可选取代的杂环基团或-COOR1(其中R1是碳氢化合物基团); R2是酰基; R3和R4分别是氢,或者R3和R4中的一个是氢,另一个是碳氢化合物基团; R5和R6各自独立地是氢或碳氢化合物基团],其特征在于在手性膦氧化物的存在下,将通式[1]所表示的N-酰基肼与烯丙基化试剂(例如烯丙基三氯硅烷或丁烯基三氯硅烷)反应。